87815230812 has 60 divisors (see below), whose sum is σ = 229601141616. Its totient is φ = 29267308800.

The previous prime is 87815230793. The next prime is 87815230817. The reversal of 87815230812 is 21803251878.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87815230817) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2660812 + ... + 2693612.

Almost surely, 2^87815230812 is an apocalyptic number.

It is an amenable number.

87815230812 is an abundant number, since it is smaller than the sum of its proper divisors (141785910804).

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

87815230812 is a wasteful number, since it uses less digits than its factorization.

87815230812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41080 (or 41069 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 45.

The spelling of 87815230812 in words is "eighty-seven billion, eight hundred fifteen million, two hundred thirty thousand, eight hundred twelve".