89961810912 has 72 divisors (see below), whose sum is σ = 255931275600. Its totient is φ = 29975270400.

The previous prime is 89961810881. The next prime is 89961810923. The reversal of 89961810912 is 21901816998.

89961810912 is a `hidden beast` number, since 8 + 9 + 9 + 618 + 1 + 0 + 9 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 673464 + ... + 795912.

It is an arithmetic number, because the mean of its divisors is an integer number (3554601050).

Almost surely, 2^89961810912 is an apocalyptic number.

It is an amenable number.

89961810912 is an abundant number, since it is smaller than the sum of its proper divisors (165969464688).

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

89961810912 is a wasteful number, since it uses less digits than its factorization.

89961810912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125016 (or 125005 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 54.

The spelling of 89961810912 in words is "eighty-nine billion, nine hundred sixty-one million, eight hundred ten thousand, nine hundred twelve".