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80403061654 = 2172139105643
BaseRepresentation
bin100101011100001100…
…1010101101110010110
321200112102112201122101
41022320121111232112
52304131140433104
6100534152352314
75544314514316
oct1127031255626
9250472481571
1080403061654
113110a483293
12136ba9a569a
1377747a8b36
143c6a4d9446
152158a895a4
hex12b8655b96

80403061654 has 12 divisors (see below), whose sum is σ = 128116298124. Its totient is φ = 37836734624.

The previous prime is 80403061561. The next prime is 80403061667. The reversal of 80403061654 is 45616030408.

It is a happy number.

It is a super-3 number, since 3×804030616543 (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 69552244 + ... + 69553399.

It is an arithmetic number, because the mean of its divisors is an integer number (10676358177).

Almost surely, 280403061654 is an apocalyptic number.

80403061654 is a deficient number, since it is larger than the sum of its proper divisors (47713236470).

80403061654 is a wasteful number, since it uses less digits than its factorization.

80403061654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139105679 (or 139105662 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

The spelling of 80403061654 in words is "eighty billion, four hundred three million, sixty-one thousand, six hundred fifty-four".

Divisors: 1 2 17 34 289 578 139105643 278211286 2364795931 4729591862 40201530827 80403061654