87251218528 has 12 divisors (see below), whose sum is σ = 171775836540. Its totient is φ = 43625609248.

The previous prime is 87251218519. The next prime is 87251218627. The reversal of 87251218528 is 82581215278.

It is a super-2 number, since 2×87251218528² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1363300258 + ... + 1363300321.

It is an arithmetic number, because the mean of its divisors is an integer number (14314653045).

Almost surely, 2^87251218528 is an apocalyptic number.

It is an amenable number.

87251218528 is a deficient number, since it is larger than the sum of its proper divisors (84524618012).

87251218528 is a wasteful number, since it uses less digits than its factorization.

87251218528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2726600589 (or 2726600581 counting only the distinct ones).

The product of its digits is 716800, while the sum is 49.

The spelling of 87251218528 in words is "eighty-seven billion, two hundred fifty-one million, two hundred eighteen thousand, five hundred twenty-eight".