239279780172 has 18 divisors (see below), whose sum is σ = 558323440948. Its totient is φ = 79759361888.

The previous prime is 239279780143. The next prime is 239279780189. The reversal of 239279780172 is 271087972932.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1623904 + ... + 1765112.

Almost surely, 2^239279780172 is an apocalyptic number.

It is an amenable number.

239279780172 is an abundant number, since it is smaller than the sum of its proper divisors (319043660776).

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

239279780172 is an frugal number, since it uses more digits than its factorization.

239279780172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282425 (or 141214 counting only the distinct ones).

The product of its (nonzero) digits is 5334336, while the sum is 57.

The spelling of 239279780172 in words is "two hundred thirty-nine billion, two hundred seventy-nine million, seven hundred eighty thousand, one hundred seventy-two".