68756017511 has 8 divisors (see below), whose sum is σ = 69998519040. Its totient is φ = 67516087608.

The previous prime is 68756017501. The next prime is 68756017537. The reversal of 68756017511 is 11571065786.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68756017511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68756017501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 588911 + ... + 695936.

It is an arithmetic number, because the mean of its divisors is an integer number (8749814880).

Almost surely, 2^68756017511 is an apocalyptic number.

68756017511 is a deficient number, since it is larger than the sum of its proper divisors (1242501529).

68756017511 is a wasteful number, since it uses less digits than its factorization.

68756017511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285813.

The product of its (nonzero) digits is 352800, while the sum is 47.

The spelling of 68756017511 in words is "sixty-eight billion, seven hundred fifty-six million, seventeen thousand, five hundred eleven".