2656131263 has 2 divisors, whose sum is σ = 2656131264. Its totient is φ = 2656131262.

The previous prime is 2656131259. The next prime is 2656131311. The reversal of 2656131263 is 3621316562.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2656131263 - 2² = 2656131259 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2656131763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1328065631 + 1328065632.

It is an arithmetic number, because the mean of its divisors is an integer number (1328065632).

Almost surely, 2^2656131263 is an apocalyptic number.

2656131263 is a deficient number, since it is larger than the sum of its proper divisors (1).

2656131263 is an equidigital number, since it uses as much as digits as its factorization.

2656131263 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 35.

The square root of 2656131263 is about 51537.6683892471. The cubic root of 2656131263 is about 1384.8939281979.

The spelling of 2656131263 in words is "two billion, six hundred fifty-six million, one hundred thirty-one thousand, two hundred sixty-three".