68036779456 has 28 divisors (see below), whose sum is σ = 135392995152. Its totient is φ = 33922009088.

The previous prime is 68036779453. The next prime is 68036779457. The reversal of 68036779456 is 65497763086.

It is a junction number, because it is equal to n+sod(n) for n = 68036779394 and 68036779403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68036779453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1483180 + ... + 1528363.

Almost surely, 2^68036779456 is an apocalyptic number.

It is an amenable number.

68036779456 is a deficient number, since it is larger than the sum of its proper divisors (67356215696).

68036779456 is a wasteful number, since it uses less digits than its factorization.

68036779456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3011908 (or 3011898 counting only the distinct ones).

The product of its (nonzero) digits is 45722880, while the sum is 61.

The spelling of 68036779456 in words is "sixty-eight billion, thirty-six million, seven hundred seventy-nine thousand, four hundred fifty-six".