263256652361 has 16 divisors (see below), whose sum is σ = 291027686400. Its totient is φ = 236862962688.

The previous prime is 263256652333. The next prime is 263256652363. The reversal of 263256652361 is 163256652362.

It is a cyclic number.

It is not a de Polignac number, because 263256652361 - 2⁶ = 263256652297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (263256652363) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 496385 + ... + 879153.

It is an arithmetic number, because the mean of its divisors is an integer number (18189230400).

Almost surely, 2^263256652361 is an apocalyptic number.

It is an amenable number.

263256652361 is a deficient number, since it is larger than the sum of its proper divisors (27771034039).

263256652361 is a wasteful number, since it uses less digits than its factorization.

263256652361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384568.

The product of its digits is 2332800, while the sum is 47.

Subtracting from 263256652361 its reverse (163256652362), we obtain a palindrome (99999999999).

The spelling of 263256652361 in words is "two hundred sixty-three billion, two hundred fifty-six million, six hundred fifty-two thousand, three hundred sixty-one".