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68056431735 = 357975692717
BaseRepresentation
bin111111011000011110…
…101011110001110111
320111122222011221102210
4333120132223301313
52103334421303420
651133101304503
74626334060605
oct773036536167
9214588157383
1068056431735
1126954099506
1211233b65133
13655789b066
14341884a875
151b84b989e0
hexfd87abc77

68056431735 has 16 divisors (see below), whose sum is σ = 109026935136. Its totient is φ = 36251215488.

The previous prime is 68056431733. The next prime is 68056431769. The reversal of 68056431735 is 53713465086.

It is not a de Polignac number, because 68056431735 - 21 = 68056431733 is a prime.

It is a super-2 number, since 2×680564317352 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68056431733) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2834404 + ... + 2858313.

It is an arithmetic number, because the mean of its divisors is an integer number (6814183446).

Almost surely, 268056431735 is an apocalyptic number.

68056431735 is a deficient number, since it is larger than the sum of its proper divisors (40970503401).

68056431735 is a wasteful number, since it uses less digits than its factorization.

68056431735 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5693522.

The product of its (nonzero) digits is 1814400, while the sum is 48.

The spelling of 68056431735 in words is "sixty-eight billion, fifty-six million, four hundred thirty-one thousand, seven hundred thirty-five".

Divisors: 1 3 5 15 797 2391 3985 11955 5692717 17078151 28463585 85390755 4537095449 13611286347 22685477245 68056431735