264305505515 has 4 divisors (see below), whose sum is σ = 317166606624. Its totient is φ = 211444404408.

The previous prime is 264305505487. The next prime is 264305505553. The reversal of 264305505515 is 515505503462.

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 264305505515 - 2²⁴ = 264288728299 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26430550547 + ... + 26430550556.

It is an arithmetic number, because the mean of its divisors is an integer number (79291651656).

Almost surely, 2^264305505515 is an apocalyptic number.

264305505515 is a deficient number, since it is larger than the sum of its proper divisors (52861101109).

264305505515 is an equidigital number, since it uses as much as digits as its factorization.

264305505515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52861101108.

The product of its (nonzero) digits is 450000, while the sum is 41.

The spelling of 264305505515 in words is "two hundred sixty-four billion, three hundred five million, five hundred five thousand, five hundred fifteen".