87637852818 has 48 divisors (see below), whose sum is σ = 192849621120. Its totient is φ = 28756667808.

The previous prime is 87637852789. The next prime is 87637852847. The reversal of 87637852818 is 81825873678.

87637852818 is a `hidden beast` number, since 8 + 76 + 37 + 8 + 528 + 1 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (87637852789) and next prime (87637852847).

It is a super-2 number, since 2×87637852818² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1768888 + ... + 1817756.

It is an arithmetic number, because the mean of its divisors is an integer number (4017700440).

Almost surely, 2^87637852818 is an apocalyptic number.

87637852818 is an abundant number, since it is smaller than the sum of its proper divisors (105211768302).

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

87637852818 is a wasteful number, since it uses less digits than its factorization.

87637852818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50431 (or 50428 counting only the distinct ones).

The product of its digits is 36126720, while the sum is 63.

The spelling of 87637852818 in words is "eighty-seven billion, six hundred thirty-seven million, eight hundred fifty-two thousand, eight hundred eighteen".