2656140264663 has 16 divisors (see below), whose sum is σ = 3560375082720. Its totient is φ = 1761335414784.

The previous prime is 2656140264653. The next prime is 2656140264731. The reversal of 2656140264663 is 3664620416562.

It is not a de Polignac number, because 2656140264663 - 2⁶ = 2656140264599 is a prime.

It is a super-3 number, since 3×2656140264663³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2656140264653) 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, 3805945 + ... + 4449437.

It is an arithmetic number, because the mean of its divisors is an integer number (222523442670).

Almost surely, 2^{2656140264663} is an apocalyptic number.

2656140264663 is a deficient number, since it is larger than the sum of its proper divisors (904234818057).

2656140264663 is a wasteful number, since it uses less digits than its factorization.

2656140264663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650818.

The product of its (nonzero) digits is 7464960, while the sum is 51.

The spelling of 2656140264663 in words is "two trillion, six hundred fifty-six billion, one hundred forty million, two hundred sixty-four thousand, six hundred sixty-three".