89945442475021 has 16 divisors (see below), whose sum is σ = 106378034007040. Its totient is φ = 74421190419840.

The previous prime is 89945442475003. The next prime is 89945442475033. The reversal of 89945442475021 is 12057424454998.

It is a cyclic number.

It is not a de Polignac number, because 89945442475021 - 2⁵ = 89945442474989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89945442475621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 521948016 + ... + 522120313.

It is an arithmetic number, because the mean of its divisors is an integer number (6648627125440).

Almost surely, 2^{89945442475021} is an apocalyptic number.

It is an amenable number.

89945442475021 is a deficient number, since it is larger than the sum of its proper divisors (16432591532019).

89945442475021 is a wasteful number, since it uses less digits than its factorization.

89945442475021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1044068764.

The product of its (nonzero) digits is 116121600, while the sum is 64.

The spelling of 89945442475021 in words is "eighty-nine trillion, nine hundred forty-five billion, four hundred forty-two million, four hundred seventy-five thousand, twenty-one".