87136588406 has 16 divisors (see below), whose sum is σ = 155871661824. Its totient is φ = 35720588904.

The previous prime is 87136588393. The next prime is 87136588519. The reversal of 87136588406 is 60488563178.

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, 135304940 + ... + 135305583.

It is an arithmetic number, because the mean of its divisors is an integer number (9741978864).

Almost surely, 2^87136588406 is an apocalyptic number.

87136588406 is a deficient number, since it is larger than the sum of its proper divisors (68735073418).

87136588406 is a wasteful number, since it uses less digits than its factorization.

87136588406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270610555.

The product of its (nonzero) digits is 7741440, while the sum is 56.

The spelling of 87136588406 in words is "eighty-seven billion, one hundred thirty-six million, five hundred eighty-eight thousand, four hundred six".