631130505423555 has 64 divisors (see below), whose sum is σ = 1029209889172608. Its totient is φ = 330166685122560.

The previous prime is 631130505423503. The next prime is 631130505423563. The reversal of 631130505423555 is 555324505031136.

It is not a de Polignac number, because 631130505423555 - 2¹² = 631130505419459 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3957918387 + ... + 3958077843.

It is an arithmetic number, because the mean of its divisors is an integer number (16081404518322).

Almost surely, 2^{631130505423555} is an apocalyptic number.

631130505423555 is a deficient number, since it is larger than the sum of its proper divisors (398079383749053).

631130505423555 is a wasteful number, since it uses less digits than its factorization.

631130505423555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171496.

The product of its (nonzero) digits is 4050000, while the sum is 48.

The spelling of 631130505423555 in words is "six hundred thirty-one trillion, one hundred thirty billion, five hundred five million, four hundred twenty-three thousand, five hundred fifty-five".