264513386173 has 4 divisors (see below), whose sum is σ = 278435143360. Its totient is φ = 250591628988.

The previous prime is 264513386153. The next prime is 264513386209. The reversal of 264513386173 is 371683315462.

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 a de Polignac number, because none of the positive numbers 2^k-264513386173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264513386113) 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, 6960878565 + ... + 6960878602.

It is an arithmetic number, because the mean of its divisors is an integer number (69608785840).

Almost surely, 2^264513386173 is an apocalyptic number.

It is an amenable number.

264513386173 is a deficient number, since it is larger than the sum of its proper divisors (13921757187).

264513386173 is a wasteful number, since it uses less digits than its factorization.

264513386173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13921757186.

The product of its digits is 2177280, while the sum is 49.

The spelling of 264513386173 in words is "two hundred sixty-four billion, five hundred thirteen million, three hundred eighty-six thousand, one hundred seventy-three".