87156254028 has 12 divisors (see below), whose sum is σ = 203364592760. Its totient is φ = 29052084672.

The previous prime is 87156253993. The next prime is 87156254039. The reversal of 87156254028 is 82045265178.

It is a tau number, because it is divible by the number of its divisors (12).

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, 3631510573 + ... + 3631510596.

Almost surely, 2^87156254028 is an apocalyptic number.

It is an amenable number.

87156254028 is an abundant number, since it is smaller than the sum of its proper divisors (116208338732).

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

87156254028 is a wasteful number, since it uses less digits than its factorization.

87156254028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7263021176 (or 7263021174 counting only the distinct ones).

The product of its (nonzero) digits is 1075200, while the sum is 48.

The spelling of 87156254028 in words is "eighty-seven billion, one hundred fifty-six million, two hundred fifty-four thousand, twenty-eight".