631193719646368 has 48 divisors (see below), whose sum is σ = 1338520202159616. Its totient is φ = 292137345688320.

The previous prime is 631193719646341. The next prime is 631193719646377. The reversal of 631193719646368 is 863646917391136.

It is a self number, because there is not a number n which added to its sum of digits gives 631193719646368.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13832237871 + ... + 13832283502.

It is an arithmetic number, because the mean of its divisors is an integer number (27885837544992).

Almost surely, 2^{631193719646368} is an apocalyptic number.

It is an amenable number.

631193719646368 is an abundant number, since it is smaller than the sum of its proper divisors (707326482513248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

631193719646368 is a wasteful number, since it uses less digits than its factorization.

631193719646368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27664521437 (or 27664521429 counting only the distinct ones).

The product of its digits is 634894848, while the sum is 73.

The spelling of 631193719646368 in words is "six hundred thirty-one trillion, one hundred ninety-three billion, seven hundred nineteen million, six hundred forty-six thousand, three hundred sixty-eight".