88637144778972 has 30 divisors (see below), whose sum is σ = 231715005024888. Its totient is φ = 29545714926216.

The previous prime is 88637144778953. The next prime is 88637144778979. The reversal of 88637144778972 is 27987744173688.

88637144778972 is a `hidden beast` number, since 8 + 8 + 6 + 3 + 71 + 4 + 477 + 8 + 9 + 72 = 666.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is a junction number, because it is equal to n+sod(n) for n = 88637144778891 and 88637144778900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88637144778979) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 136785716928 + ... + 136785717575.

Almost surely, 2^{88637144778972} is an apocalyptic number.

It is an amenable number.

88637144778972 is an abundant number, since it is smaller than the sum of its proper divisors (143077860245916).

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

88637144778972 is a wasteful number, since it uses less digits than its factorization.

88637144778972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273571434519 (or 273571434508 counting only the distinct ones).

The product of its digits is 6372753408, while the sum is 81.

The spelling of 88637144778972 in words is "eighty-eight trillion, six hundred thirty-seven billion, one hundred forty-four million, seven hundred seventy-eight thousand, nine hundred seventy-two".