68992557935 has 16 divisors (see below), whose sum is σ = 97670572032. Its totient is φ = 45783079200.

The previous prime is 68992557917. The next prime is 68992558081. The reversal of 68992557935 is 53975529986.

It is a de Polignac number, because none of the positive numbers 2^k-68992557935 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31792721 + ... + 31794890.

It is an arithmetic number, because the mean of its divisors is an integer number (6104410752).

Almost surely, 2^68992557935 is an apocalyptic number.

68992557935 is a deficient number, since it is larger than the sum of its proper divisors (28678014097).

68992557935 is a wasteful number, since it uses less digits than its factorization.

68992557935 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63587654.

The product of its digits is 183708000, while the sum is 68.

The spelling of 68992557935 in words is "sixty-eight billion, nine hundred ninety-two million, five hundred fifty-seven thousand, nine hundred thirty-five".