87247921376 has 72 divisors (see below), whose sum is σ = 217978210296. Its totient is φ = 33992689920.

The previous prime is 87247921363. The next prime is 87247921399. The reversal of 87247921376 is 67312974278.

It is a happy number.

It is a super-2 number, since 2×87247921376² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (56).

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, 2511971 + ... + 2546466.

It is an arithmetic number, because the mean of its divisors is an integer number (3027475143).

Almost surely, 2^87247921376 is an apocalyptic number.

It is an amenable number.

87247921376 is an abundant number, since it is smaller than the sum of its proper divisors (130730288920).

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

87247921376 is a wasteful number, since it uses less digits than its factorization.

87247921376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5058472 (or 5058457 counting only the distinct ones).

The product of its digits is 7112448, while the sum is 56.

The spelling of 87247921376 in words is "eighty-seven billion, two hundred forty-seven million, nine hundred twenty-one thousand, three hundred seventy-six".