89918549964 has 18 divisors (see below), whose sum is σ = 227294112500. Its totient is φ = 29972849976.

The previous prime is 89918549911. The next prime is 89918549969. The reversal of 89918549964 is 46994581998.

89918549964 is a `hidden beast` number, since 8 + 9 + 9 + 18 + 549 + 9 + 64 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 89918549892 and 89918549901.

It is not an unprimeable number, because it can be changed into a prime (89918549969) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1248868714 + ... + 1248868785.

Almost surely, 2^89918549964 is an apocalyptic number.

It is an amenable number.

89918549964 is an abundant number, since it is smaller than the sum of its proper divisors (137375562536).

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

89918549964 is a wasteful number, since it uses less digits than its factorization.

89918549964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2497737509 (or 2497737504 counting only the distinct ones).

The product of its digits is 201553920, while the sum is 72.

The spelling of 89918549964 in words is "eighty-nine billion, nine hundred eighteen million, five hundred forty-nine thousand, nine hundred sixty-four".