68445376634879 has 8 divisors (see below), whose sum is σ = 73805027437680. Its totient is φ = 63261452088000.

The previous prime is 68445376634851. The next prime is 68445376634903. The reversal of 68445376634879 is 97843667354486.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68445376634879 - 2³² = 68441081667583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68445376634819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43931563172 + ... + 43931564729.

It is an arithmetic number, because the mean of its divisors is an integer number (9225628429710).

Almost surely, 2^{68445376634879} is an apocalyptic number.

68445376634879 is a deficient number, since it is larger than the sum of its proper divisors (5359650802801).

68445376634879 is a wasteful number, since it uses less digits than its factorization.

68445376634879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87863127961.

The product of its digits is 17557585920, while the sum is 80.

The spelling of 68445376634879 in words is "sixty-eight trillion, four hundred forty-five billion, three hundred seventy-six million, six hundred thirty-four thousand, eight hundred seventy-nine".