264495610693 has 4 divisors (see below), whose sum is σ = 264497804748. Its totient is φ = 264493416640.

The previous prime is 264495610667. The next prime is 264495610697. The reversal of 264495610693 is 396016594462.

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

It can be written as a sum of positive squares in 2 ways, for example, as 148809234564 + 115686376129 = 385758^2 + 340127^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-264495610693 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 (264495610697) 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, 904996 + ... + 1161037.

It is an arithmetic number, because the mean of its divisors is an integer number (66124451187).

Almost surely, 2^264495610693 is an apocalyptic number.

It is an amenable number.

264495610693 is a deficient number, since it is larger than the sum of its proper divisors (2194055).

264495610693 is a wasteful number, since it uses less digits than its factorization.

264495610693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2194054.

The product of its (nonzero) digits is 8398080, while the sum is 55.

The spelling of 264495610693 in words is "two hundred sixty-four billion, four hundred ninety-five million, six hundred ten thousand, six hundred ninety-three".