87320232616564 has 24 divisors (see below), whose sum is σ = 152892635908320. Its totient is φ = 43636627686624.

The previous prime is 87320232616541. The next prime is 87320232616577. The reversal of 87320232616564 is 46561623202378.

It is a happy number.

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65313342 + ... + 66636874.

It is an arithmetic number, because the mean of its divisors is an integer number (6370526496180).

Almost surely, 2^{87320232616564} is an apocalyptic number.

It is an amenable number.

87320232616564 is a deficient number, since it is larger than the sum of its proper divisors (65572403291756).

87320232616564 is a wasteful number, since it uses less digits than its factorization.

87320232616564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1332399 (or 1332397 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 55.

The spelling of 87320232616564 in words is "eighty-seven trillion, three hundred twenty billion, two hundred thirty-two million, six hundred sixteen thousand, five hundred sixty-four".