87457728512 has 96 divisors (see below), whose sum is σ = 218023565760. Its totient is φ = 34074378240.

The previous prime is 87457728443. The next prime is 87457728557. The reversal of 87457728512 is 21582775478.

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

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, 119603 + ... + 434994.

It is an arithmetic number, because the mean of its divisors is an integer number (2271078810).

Almost surely, 2^87457728512 is an apocalyptic number.

It is an amenable number.

87457728512 is an abundant number, since it is smaller than the sum of its proper divisors (130565837248).

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

87457728512 is a wasteful number, since it uses less digits than its factorization.

87457728512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554637 (or 554617 counting only the distinct ones).

The product of its digits is 8780800, while the sum is 56.

The spelling of 87457728512 in words is "eighty-seven billion, four hundred fifty-seven million, seven hundred twenty-eight thousand, five hundred twelve".