68231511715 has 16 divisors (see below), whose sum is σ = 82487462400. Its totient is φ = 54178974432.

The previous prime is 68231511671. The next prime is 68231511727. The reversal of 68231511715 is 51711513286.

It is a cyclic number.

It is not a de Polignac number, because 68231511715 - 2⁷ = 68231511587 is a prime.

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, 3492364 + ... + 3511846.

It is an arithmetic number, because the mean of its divisors is an integer number (5155466400).

Almost surely, 2^68231511715 is an apocalyptic number.

68231511715 is a deficient number, since it is larger than the sum of its proper divisors (14255950685).

68231511715 is a wasteful number, since it uses less digits than its factorization.

68231511715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24666.

The product of its digits is 50400, while the sum is 40.

The spelling of 68231511715 in words is "sixty-eight billion, two hundred thirty-one million, five hundred eleven thousand, seven hundred fifteen".