189956599456 has 24 divisors (see below), whose sum is σ = 402744521844. Its totient is φ = 87672276480.

The previous prime is 189956599447. The next prime is 189956599477. The reversal of 189956599456 is 654995659981.

It can be written as a sum of positive squares in 2 ways, for example, as 183968935056 + 5987664400 = 428916^2 + 77380^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 228312805 + ... + 228313636.

Almost surely, 2^189956599456 is an apocalyptic number.

189956599456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

189956599456 is an abundant number, since it is smaller than the sum of its proper divisors (212787922388).

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

189956599456 is a wasteful number, since it uses less digits than its factorization.

189956599456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456626464 (or 456626456 counting only the distinct ones).

The product of its digits is 944784000, while the sum is 76.

The spelling of 189956599456 in words is "one hundred eighty-nine billion, nine hundred fifty-six million, five hundred ninety-nine thousand, four hundred fifty-six".