264668974657 has 4 divisors (see below), whose sum is σ = 264736720816. Its totient is φ = 264601228500.

The previous prime is 264668974649. The next prime is 264668974673. The reversal of 264668974657 is 756479866462.

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 a cyclic number.

It is not a de Polignac number, because 264668974657 - 2³ = 264668974649 is a prime.

It is a super-2 number, since 2×264668974657² (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 (264668954657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33867219 + ... + 33875032.

It is an arithmetic number, because the mean of its divisors is an integer number (66184180204).

Almost surely, 2^264668974657 is an apocalyptic number.

It is an amenable number.

264668974657 is a deficient number, since it is larger than the sum of its proper divisors (67746159).

264668974657 is an equidigital number, since it uses as much as digits as its factorization.

264668974657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67746158.

The product of its digits is 731566080, while the sum is 70.

The spelling of 264668974657 in words is "two hundred sixty-four billion, six hundred sixty-eight million, nine hundred seventy-four thousand, six hundred fifty-seven".