264564402239 has 4 divisors (see below), whose sum is σ = 264572277480. Its totient is φ = 264556527000.

The previous prime is 264564402229. The next prime is 264564402251. The reversal of 264564402239 is 932204465462.

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

It is a cyclic number.

It is not a de Polignac number, because 264564402239 - 2¹⁶ = 264564336703 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 264564402193 and 264564402202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264564402229) 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, 3887012 + ... + 3954489.

It is an arithmetic number, because the mean of its divisors is an integer number (66143069370).

Almost surely, 2^264564402239 is an apocalyptic number.

264564402239 is a deficient number, since it is larger than the sum of its proper divisors (7875241).

264564402239 is an equidigital number, since it uses as much as digits as its factorization.

264564402239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7875240.

The product of its (nonzero) digits is 2488320, while the sum is 47.

The spelling of 264564402239 in words is "two hundred sixty-four billion, five hundred sixty-four million, four hundred two thousand, two hundred thirty-nine".