264664456761 has 4 divisors (see below), whose sum is σ = 352885942352. Its totient is φ = 176442971172.

The previous prime is 264664456753. The next prime is 264664456811. The reversal of 264664456761 is 167654466462.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 264664456761 - 2³ = 264664456753 is a prime.

It is a super-2 number, since 2×264664456761² (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 (264664456711) 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, 44110742791 + ... + 44110742796.

It is an arithmetic number, because the mean of its divisors is an integer number (88221485588).

Almost surely, 2^264664456761 is an apocalyptic number.

It is an amenable number.

264664456761 is a deficient number, since it is larger than the sum of its proper divisors (88221485591).

264664456761 is an equidigital number, since it uses as much as digits as its factorization.

264664456761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88221485590.

The product of its digits is 34836480, while the sum is 57.

The spelling of 264664456761 in words is "two hundred sixty-four billion, six hundred sixty-four million, four hundred fifty-six thousand, seven hundred sixty-one".