55626406631 has 2 divisors, whose sum is σ = 55626406632. Its totient is φ = 55626406630.

The previous prime is 55626406597. The next prime is 55626406651. The reversal of 55626406631 is 13660462655.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55626406631 - 2¹⁸ = 55626144487 is a prime.

It is a super-2 number, since 2×55626406631² (a number of 22 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 (55626406651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27813203315 + 27813203316.

It is an arithmetic number, because the mean of its divisors is an integer number (27813203316).

Almost surely, 2^55626406631 is an apocalyptic number.

55626406631 is a deficient number, since it is larger than the sum of its proper divisors (1).

55626406631 is an equidigital number, since it uses as much as digits as its factorization.

55626406631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 777600, while the sum is 44.

The spelling of 55626406631 in words is "fifty-five billion, six hundred twenty-six million, four hundred six thousand, six hundred thirty-one".