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80654237454 = 23721961236699
BaseRepresentation
bin100101100011101011…
…1011111111100001110
321201011221011210001210
41023013113133330032
52310134441044304
6101015124115250
75553454464300
oct1130727377416
9251157153053
1080654237454
113122923a39a
121376ab35b26
1377b484077b
143c919dd970
152170b51c89
hex12c75dff0e

80654237454 has 96 divisors (see below), whose sum is σ = 200759472000. Its totient is φ = 21473242560.

The previous prime is 80654237441. The next prime is 80654237491. The reversal of 80654237454 is 45473245608.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 222397 + ... + 459095.

It is an arithmetic number, because the mean of its divisors is an integer number (2091244500).

Almost surely, 280654237454 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80654237454, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100379736000).

80654237454 is an abundant number, since it is smaller than the sum of its proper divisors (120105234546).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80654237454 is a wasteful number, since it uses less digits than its factorization.

80654237454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236798 (or 236791 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 48.

The spelling of 80654237454 in words is "eighty billion, six hundred fifty-four million, two hundred thirty-seven thousand, four hundred fifty-four".

Divisors: 1 2 3 6 7 14 19 21 38 42 49 57 61 98 114 122 133 147 183 266 294 366 399 427 798 854 931 1159 1281 1862 2318 2562 2793 2989 3477 5586 5978 6954 8113 8967 16226 17934 24339 48678 56791 113582 170373 236699 340746 473398 710097 1420194 1656893 3313786 4497281 4970679 8994562 9941358 11598251 13491843 14438639 23196502 26983686 28877278 31480967 34794753 43315917 62961934 69589506 86631834 94442901 101070473 188885802 202140946 220366769 274334141 303211419 440733538 548668282 606422838 661100307 707493311 823002423 1322200614 1414986622 1646004846 1920338987 2122479933 3840677974 4244959866 5761016961 11522033922 13442372909 26884745818 40327118727 80654237454