68457818715 has 64 divisors (see below), whose sum is σ = 128734244352. Its totient is φ = 30625920000.

The previous prime is 68457818711. The next prime is 68457818719. The reversal of 68457818715 is 51781875486.

It is an interprime number because it is at equal distance from previous prime (68457818711) and next prime (68457818719).

It is not a de Polignac number, because 68457818715 - 2² = 68457818711 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68457818711) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6968487 + ... + 6978303.

It is an arithmetic number, because the mean of its divisors is an integer number (2011472568).

Almost surely, 2^68457818715 is an apocalyptic number.

68457818715 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

68457818715 is a deficient number, since it is larger than the sum of its proper divisors (60276425637).

68457818715 is a wasteful number, since it uses less digits than its factorization.

68457818715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13100.

The product of its digits is 15052800, while the sum is 60.

The spelling of 68457818715 in words is "sixty-eight billion, four hundred fifty-seven million, eight hundred eighteen thousand, seven hundred fifteen".