68705056915 has 16 divisors (see below), whose sum is σ = 90588234240. Its totient is φ = 49607831520.

The previous prime is 68705056909. The next prime is 68705056919. The reversal of 68705056915 is 51965050786.

It is not a de Polignac number, because 68705056915 - 2¹⁵ = 68705024147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68705056919) 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, 4485819 + ... + 4501108.

It is an arithmetic number, because the mean of its divisors is an integer number (5661764640).

Almost surely, 2^68705056915 is an apocalyptic number.

68705056915 is a deficient number, since it is larger than the sum of its proper divisors (21883177325).

68705056915 is a wasteful number, since it uses less digits than its factorization.

68705056915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8987082.

The product of its (nonzero) digits is 2268000, while the sum is 52.

The spelling of 68705056915 in words is "sixty-eight billion, seven hundred five million, fifty-six thousand, nine hundred fifteen".