156800055299979 has 96 divisors (see below), whose sum is σ = 270457382173440. Its totient is φ = 80043141282048.

The previous prime is 156800055299971. The next prime is 156800055299981. The reversal of 156800055299979 is 979992550008651.

It is not a de Polignac number, because 156800055299979 - 2³ = 156800055299971 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 156800055299979.

It is not an unprimeable number, because it can be changed into a prime (156800055299971) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 203784 + ... + 17709930.

It is an arithmetic number, because the mean of its divisors is an integer number (2817264397640).

Almost surely, 2^{156800055299979} is an apocalyptic number.

156800055299979 is a deficient number, since it is larger than the sum of its proper divisors (113657326873461).

156800055299979 is a wasteful number, since it uses less digits than its factorization.

156800055299979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17506329 (or 17506322 counting only the distinct ones).

The product of its (nonzero) digits is 551124000, while the sum is 75.

The spelling of 156800055299979 in words is "one hundred fifty-six trillion, eight hundred billion, fifty-five million, two hundred ninety-nine thousand, nine hundred seventy-nine".