263072564836 has 27 divisors (see below), whose sum is σ = 462405438859. Its totient is φ = 130959263168.

The previous prime is 263072564831. The next prime is 263072564857. The reversal of 263072564836 is 638465270362.

The square root of 263072564836 is 512906.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 3437476900 + 259635087936 = 58630^2 + 509544^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (263072564831) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 325182000 + ... + 325182808.

Almost surely, 2^263072564836 is an apocalyptic number.

263072564836 is the 512906-th square number.

It is an amenable number.

263072564836 is a deficient number, since it is larger than the sum of its proper divisors (199332874023).

263072564836 is an frugal number, since it uses more digits than its factorization.

263072564836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2256 (or 1128 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 52.

The spelling of 263072564836 in words is "two hundred sixty-three billion, seventy-two million, five hundred sixty-four thousand, eight hundred thirty-six".