87113656428 has 24 divisors (see below), whose sum is σ = 203270192832. Its totient is φ = 29037171984.

The previous prime is 87113656403. The next prime is 87113656429. The reversal of 87113656428 is 82465631178.

It is not an unprimeable number, because it can be changed into a prime (87113656429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 696151 + ... + 811697.

It is an arithmetic number, because the mean of its divisors is an integer number (8469591368).

Almost surely, 2^87113656428 is an apocalyptic number.

It is an amenable number.

87113656428 is an abundant number, since it is smaller than the sum of its proper divisors (116156536404).

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

87113656428 is a wasteful number, since it uses less digits than its factorization.

87113656428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178381 (or 178379 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 51.

The spelling of 87113656428 in words is "eighty-seven billion, one hundred thirteen million, six hundred fifty-six thousand, four hundred twenty-eight".