89450537565 has 16 divisors (see below), whose sum is σ = 143911587456. Its totient is φ = 47443377600.

The previous prime is 89450537557. The next prime is 89450537581. The reversal of 89450537565 is 56573505498.

It is not a de Polignac number, because 89450537565 - 2³ = 89450537557 is a prime.

It is a super-2 number, since 2×89450537565² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16470681 + ... + 16476110.

It is an arithmetic number, because the mean of its divisors is an integer number (8994474216).

Almost surely, 2^89450537565 is an apocalyptic number.

It is an amenable number.

89450537565 is a deficient number, since it is larger than the sum of its proper divisors (54461049891).

89450537565 is a wasteful number, since it uses less digits than its factorization.

89450537565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32946980.

The product of its (nonzero) digits is 22680000, while the sum is 57.

The spelling of 89450537565 in words is "eighty-nine billion, four hundred fifty million, five hundred thirty-seven thousand, five hundred sixty-five".