68036779464 has 32 divisors (see below), whose sum is σ = 171681599520. Its totient is φ = 22466973056.

The previous prime is 68036779457. The next prime is 68036779519. The reversal of 68036779464 is 46497763086.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 68036779398 and 68036779407.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13244469 + ... + 13249604.

It is an arithmetic number, because the mean of its divisors is an integer number (5365049985).

Almost surely, 2^68036779464 is an apocalyptic number.

It is an amenable number.

68036779464 is an abundant number, since it is smaller than the sum of its proper divisors (103644820056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68036779464 is a wasteful number, since it uses less digits than its factorization.

68036779464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26494189 (or 26494185 counting only the distinct ones).

The product of its (nonzero) digits is 36578304, while the sum is 60.

The spelling of 68036779464 in words is "sixty-eight billion, thirty-six million, seven hundred seventy-nine thousand, four hundred sixty-four".