7788992887956 has 24 divisors (see below), whose sum is σ = 20770647701440. Its totient is φ = 2225426539392.

The previous prime is 7788992887891. The next prime is 7788992888081. The reversal of 7788992887956 is 6597882998877.

It is a self number, because there is not a number n which added to its sum of digits gives 7788992887956.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46363052821 + ... + 46363052988.

Almost surely, 2^{7788992887956} is an apocalyptic number.

It is an amenable number.

7788992887956 is an abundant number, since it is smaller than the sum of its proper divisors (12981654813484).

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

7788992887956 is a wasteful number, since it uses less digits than its factorization.

7788992887956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92726105823 (or 92726105821 counting only the distinct ones).

The product of its digits is 61451550720, while the sum is 93.

The spelling of 7788992887956 in words is "seven trillion, seven hundred eighty-eight billion, nine hundred ninety-two million, eight hundred eighty-seven thousand, nine hundred fifty-six".