78479730556 has 6 divisors (see below), whose sum is σ = 137339528480. Its totient is φ = 39239865276.

The previous prime is 78479730533. The next prime is 78479730607. The reversal of 78479730556 is 65503797487.

It is a junction number, because it is equal to n+sod(n) for n = 78479730494 and 78479730503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9809966316 + ... + 9809966323.

Almost surely, 2^78479730556 is an apocalyptic number.

It is an amenable number.

78479730556 is a deficient number, since it is larger than the sum of its proper divisors (58859797924).

78479730556 is a wasteful number, since it uses less digits than its factorization.

78479730556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19619932643 (or 19619932641 counting only the distinct ones).

The product of its (nonzero) digits is 44452800, while the sum is 61.

The spelling of 78479730556 in words is "seventy-eight billion, four hundred seventy-nine million, seven hundred thirty thousand, five hundred fifty-six".