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68520240414 = 235563250423
BaseRepresentation
bin111111110100000111…
…111110010100011110
320112212021220212100000
4333310013332110132
52110312140143124
651251110315130
74643665301523
oct776407762436
9215767825300
1068520240414
112707198686a
1211343358aa6
1365cc9c1072
1434602a114a
151bb07636c9
hexff41fe51e

68520240414 has 48 divisors (see below), whose sum is σ = 154233136512. Its totient is φ = 22799420568.

The previous prime is 68520240403. The next prime is 68520240433. The reversal of 68520240414 is 41404202586.

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 23 ways as a sum of consecutive naturals, for example, 148407 + ... + 398829.

It is an arithmetic number, because the mean of its divisors is an integer number (3213190344).

Almost surely, 268520240414 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68520240414, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77116568256).

68520240414 is an abundant number, since it is smaller than the sum of its proper divisors (85712896098).

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

68520240414 is a wasteful number, since it uses less digits than its factorization.

68520240414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251003 (or 250991 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 36.

The spelling of 68520240414 in words is "sixty-eight billion, five hundred twenty million, two hundred forty thousand, four hundred fourteen".

Divisors: 1 2 3 6 9 18 27 54 81 162 243 486 563 1126 1689 3378 5067 10134 15201 30402 45603 91206 136809 250423 273618 500846 751269 1502538 2253807 4507614 6761421 13522842 20284263 40568526 60852789 121705578 140988149 281976298 422964447 845928894 1268893341 2537786682 3806680023 7613360046 11420040069 22840080138 34260120207 68520240414