78900485556 has 24 divisors (see below), whose sum is σ = 184109280544. Its totient is φ = 26298997920.

The previous prime is 78900485551. The next prime is 78900485569. The reversal of 78900485556 is 65558400987.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 78900485496 and 78900485505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78900485551) 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, 163146 + ... + 429438.

Almost surely, 2^78900485556 is an apocalyptic number.

It is an amenable number.

78900485556 is an abundant number, since it is smaller than the sum of its proper divisors (105208794988).

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

78900485556 is a wasteful number, since it uses less digits than its factorization.

78900485556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290991 (or 290989 counting only the distinct ones).

The product of its (nonzero) digits is 12096000, while the sum is 57.

The spelling of 78900485556 in words is "seventy-eight billion, nine hundred million, four hundred eighty-five thousand, five hundred fifty-six".