89319554091 has 32 divisors (see below), whose sum is σ = 134903121920. Its totient is φ = 58394315232.

The previous prime is 89319554087. The next prime is 89319554099. The reversal of 89319554091 is 19045591398.

89319554091 is a `hidden beast` number, since 8 + 9 + 3 + 1 + 9 + 5 + 540 + 91 = 666.

It is not a de Polignac number, because 89319554091 - 2² = 89319554087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89319554099) 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, 292701 + ... + 514113.

It is an arithmetic number, because the mean of its divisors is an integer number (4215722560).

Almost surely, 2^89319554091 is an apocalyptic number.

89319554091 is a deficient number, since it is larger than the sum of its proper divisors (45583567829).

89319554091 is a wasteful number, since it uses less digits than its factorization.

89319554091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221712 (or 221706 counting only the distinct ones).

The product of its (nonzero) digits is 1749600, while the sum is 54.

The spelling of 89319554091 in words is "eighty-nine billion, three hundred nineteen million, five hundred fifty-four thousand, ninety-one".