89911361085 has 64 divisors (see below), whose sum is σ = 177331617792. Its totient is φ = 37881605376.

The previous prime is 89911361077. The next prime is 89911361087. The reversal of 89911361085 is 58016311998.

It is not a de Polignac number, because 89911361085 - 2³ = 89911361077 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89911361087) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 832252 + ... + 934058.

It is an arithmetic number, because the mean of its divisors is an integer number (2770806528).

Almost surely, 2^89911361085 is an apocalyptic number.

It is an amenable number.

89911361085 is a deficient number, since it is larger than the sum of its proper divisors (87420256707).

89911361085 is a wasteful number, since it uses less digits than its factorization.

89911361085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102482.

The product of its (nonzero) digits is 466560, while the sum is 51.

The spelling of 89911361085 in words is "eighty-nine billion, nine hundred eleven million, three hundred sixty-one thousand, eighty-five".