264433475631 has 64 divisors (see below), whose sum is σ = 407587604480. Its totient is φ = 151136979840.

The previous prime is 264433475617. The next prime is 264433475653. The reversal of 264433475631 is 136574334462.

It is a happy number.

It is not a de Polignac number, because 264433475631 - 2¹¹ = 264433473583 is a prime.

It is a super-2 number, since 2×264433475631² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264433475611) 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, 10462896 + ... + 10488138.

It is an arithmetic number, because the mean of its divisors is an integer number (6368556320).

Almost surely, 2^264433475631 is an apocalyptic number.

264433475631 is a deficient number, since it is larger than the sum of its proper divisors (143154128849).

264433475631 is a wasteful number, since it uses less digits than its factorization.

264433475631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25556.

The product of its digits is 4354560, while the sum is 48.

The spelling of 264433475631 in words is "two hundred sixty-four billion, four hundred thirty-three million, four hundred seventy-five thousand, six hundred thirty-one".