89873678538 has 24 divisors (see below), whose sum is σ = 222544347168. Its totient is φ = 25678193832.

The previous prime is 89873678537. The next prime is 89873678591. The reversal of 89873678538 is 83587637898.

89873678538 is a `hidden beast` number, since 8 + 9 + 87 + 3 + 6 + 7 + 8 + 538 = 666.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (89873678537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 356641456 + ... + 356641707.

It is an arithmetic number, because the mean of its divisors is an integer number (9272681132).

Almost surely, 2^89873678538 is an apocalyptic number.

89873678538 is an abundant number, since it is smaller than the sum of its proper divisors (132670668630).

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

89873678538 is a wasteful number, since it uses less digits than its factorization.

89873678538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713283178 (or 713283175 counting only the distinct ones).

The product of its digits is 487710720, while the sum is 72.

The spelling of 89873678538 in words is "eighty-nine billion, eight hundred seventy-three million, six hundred seventy-eight thousand, five hundred thirty-eight".