631662532079 has 2 divisors, whose sum is σ = 631662532080. Its totient is φ = 631662532078.

The previous prime is 631662531949. The next prime is 631662532087. The reversal of 631662532079 is 970235266136.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-631662532079 is a prime.

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 (631662531079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315831266039 + 315831266040.

It is an arithmetic number, because the mean of its divisors is an integer number (315831266040).

Almost surely, 2^631662532079 is an apocalyptic number.

631662532079 is a deficient number, since it is larger than the sum of its proper divisors (1).

631662532079 is an equidigital number, since it uses as much as digits as its factorization.

631662532079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2449440, while the sum is 50.

The spelling of 631662532079 in words is "six hundred thirty-one billion, six hundred sixty-two million, five hundred thirty-two thousand, seventy-nine".