68838536915 has 16 divisors (see below), whose sum is σ = 86350356480. Its totient is φ = 52619729760.

The previous prime is 68838536911. The next prime is 68838536927. The reversal of 68838536915 is 51963583886.

It is not a de Polignac number, because 68838536915 - 2² = 68838536911 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68838536911) 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, 2798639 + ... + 2823128.

It is an arithmetic number, because the mean of its divisors is an integer number (5396897280).

Almost surely, 2^68838536915 is an apocalyptic number.

68838536915 is a deficient number, since it is larger than the sum of its proper divisors (17511819565).

68838536915 is a wasteful number, since it uses less digits than its factorization.

68838536915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5621882.

The product of its digits is 37324800, while the sum is 62.

The spelling of 68838536915 in words is "sixty-eight billion, eight hundred thirty-eight million, five hundred thirty-six thousand, nine hundred fifteen".