264309608257 has 4 divisors (see below), whose sum is σ = 265931139760. Its totient is φ = 262688076756.

The previous prime is 264309608239. The next prime is 264309608287. The reversal of 264309608257 is 752806903462.

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 264309608257 - 2¹⁵ = 264309575489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (264309608287) 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, 810765507 + ... + 810765832.

It is an arithmetic number, because the mean of its divisors is an integer number (66482784940).

Almost surely, 2^264309608257 is an apocalyptic number.

It is an amenable number.

264309608257 is a deficient number, since it is larger than the sum of its proper divisors (1621531503).

264309608257 is a wasteful number, since it uses less digits than its factorization.

264309608257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1621531502.

The product of its (nonzero) digits is 4354560, while the sum is 52.

The spelling of 264309608257 in words is "two hundred sixty-four billion, three hundred nine million, six hundred eight thousand, two hundred fifty-seven".