161862078200 has 48 divisors (see below), whose sum is σ = 376374567480. Its totient is φ = 64737048960.

The previous prime is 161862078179. The next prime is 161862078227. The reversal of 161862078200 is 2870268161.

It is a congruent number.

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, 1793354 + ... + 1881446.

Almost surely, 2^161862078200 is an apocalyptic number.

161862078200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161862078200 is an abundant number, since it is smaller than the sum of its proper divisors (214512489280).

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

161862078200 is a wasteful number, since it uses less digits than its factorization.

161862078200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97296 (or 97287 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 41.

The spelling of 161862078200 in words is "one hundred sixty-one billion, eight hundred sixty-two million, seventy-eight thousand, two hundred".