89968366921 has 32 divisors (see below), whose sum is σ = 97396266240. Its totient is φ = 82897900800.

The previous prime is 89968366877. The next prime is 89968366927. The reversal of 89968366921 is 12966386998.

It is a cyclic number.

It is not a de Polignac number, because 89968366921 - 2¹⁷ = 89968235849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89968366927) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81125115 + ... + 81126223.

It is an arithmetic number, because the mean of its divisors is an integer number (3043633320).

Almost surely, 2^89968366921 is an apocalyptic number.

It is an amenable number.

89968366921 is a deficient number, since it is larger than the sum of its proper divisors (7427899319).

89968366921 is a wasteful number, since it uses less digits than its factorization.

89968366921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2337.

The product of its digits is 60466176, while the sum is 67.

The spelling of 89968366921 in words is "eighty-nine billion, nine hundred sixty-eight million, three hundred sixty-six thousand, nine hundred twenty-one".