264401279931 has 4 divisors (see below), whose sum is σ = 352535039912. Its totient is φ = 176267519952.

The previous prime is 264401279921. The next prime is 264401279959. The reversal of 264401279931 is 139972104462.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 264401279931 - 2¹¹ = 264401277883 is a prime.

It is a super-2 number, since 2×264401279931² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (264401279921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44066879986 + ... + 44066879991.

It is an arithmetic number, because the mean of its divisors is an integer number (88133759978).

Almost surely, 2^264401279931 is an apocalyptic number.

264401279931 is a deficient number, since it is larger than the sum of its proper divisors (88133759981).

264401279931 is an equidigital number, since it uses as much as digits as its factorization.

264401279931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88133759980.

The product of its (nonzero) digits is 653184, while the sum is 48.

The spelling of 264401279931 in words is "two hundred sixty-four billion, four hundred one million, two hundred seventy-nine thousand, nine hundred thirty-one".