2551063291631 has 2 divisors, whose sum is σ = 2551063291632. Its totient is φ = 2551063291630.

The previous prime is 2551063291577. The next prime is 2551063291661. The reversal of 2551063291631 is 1361923601552.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2551063291631 is a prime.

It is a super-2 number, since 2×2551063291631² (a number of 26 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2551063291661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1275531645815 + 1275531645816.

It is an arithmetic number, because the mean of its divisors is an integer number (1275531645816).

Almost surely, 2^{2551063291631} is an apocalyptic number.

2551063291631 is a deficient number, since it is larger than the sum of its proper divisors (1).

2551063291631 is an equidigital number, since it uses as much as digits as its factorization.

2551063291631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 291600, while the sum is 44.

The spelling of 2551063291631 in words is "two trillion, five hundred fifty-one billion, sixty-three million, two hundred ninety-one thousand, six hundred thirty-one".