87309173932 has 12 divisors (see below), whose sum is σ = 152797044400. Its totient is φ = 43652875536.

The previous prime is 87309173909. The next prime is 87309173951. The reversal of 87309173932 is 23937190378.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 87309173932.

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, 309432 + ... + 519967.

Almost surely, 2^87309173932 is an apocalyptic number.

It is an amenable number.

87309173932 is a deficient number, since it is larger than the sum of its proper divisors (65487870468).

87309173932 is a wasteful number, since it uses less digits than its factorization.

87309173932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 855720 (or 855718 counting only the distinct ones).

The product of its (nonzero) digits is 1714608, while the sum is 52.

The spelling of 87309173932 in words is "eighty-seven billion, three hundred nine million, one hundred seventy-three thousand, nine hundred thirty-two".