163977113800 has 48 divisors (see below), whose sum is σ = 390545511300. Its totient is φ = 63991065600.

The previous prime is 163977113777. The next prime is 163977113857. The reversal of 163977113800 is 8311779361.

It can be written as a sum of positive squares in 6 ways, for example, as 37669375396 + 126307738404 = 194086^2 + 355398^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9990405 + ... + 10006804.

Almost surely, 2^163977113800 is an apocalyptic number.

163977113800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163977113800 is an abundant number, since it is smaller than the sum of its proper divisors (226568397500).

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

163977113800 is a wasteful number, since it uses less digits than its factorization.

163977113800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19997266 (or 19997257 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 46.

The spelling of 163977113800 in words is "one hundred sixty-three billion, nine hundred seventy-seven million, one hundred thirteen thousand, eight hundred".