87818793216 has 144 divisors (see below), whose sum is σ = 291398919168. Its totient is φ = 22810060800.

The previous prime is 87818793173. The next prime is 87818793259. The reversal of 87818793216 is 61239781878.

It is an interprime number because it is at equal distance from previous prime (87818793173) and next prime (87818793259).

It is a self number, because there is not a number n which added to its sum of digits gives 87818793216.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 683380 + ... + 801651.

Almost surely, 2^87818793216 is an apocalyptic number.

It is an amenable number.

87818793216 is an abundant number, since it is smaller than the sum of its proper divisors (203580125952).

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

87818793216 is a wasteful number, since it uses less digits than its factorization.

87818793216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1485068 (or 1485054 counting only the distinct ones).

The product of its digits is 8128512, while the sum is 60.

The spelling of 87818793216 in words is "eighty-seven billion, eight hundred eighteen million, seven hundred ninety-three thousand, two hundred sixteen".