630081618308991 has 12 divisors (see below), whose sum is σ = 910455098740200. Its totient is φ = 419898778839600.

The previous prime is 630081618308977. The next prime is 630081618309037. The reversal of 630081618308991 is 199803816180036.

630081618308991 is a `hidden beast` number, since 6 + 3 + 0 + 0 + 8 + 1 + 618 + 3 + 0 + 8 + 9 + 9 + 1 = 666.

It is not a de Polignac number, because 630081618308991 - 2⁹ = 630081618308479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630081618308921) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12969421560 + ... + 12969470141.

It is an arithmetic number, because the mean of its divisors is an integer number (75871258228350).

Almost surely, 2^{630081618308991} is an apocalyptic number.

630081618308991 is a deficient number, since it is larger than the sum of its proper divisors (280373480431209).

630081618308991 is a wasteful number, since it uses less digits than its factorization.

630081618308991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25938894406 (or 25938894403 counting only the distinct ones).

The product of its (nonzero) digits is 13436928, while the sum is 63.

The spelling of 630081618308991 in words is "six hundred thirty trillion, eighty-one billion, six hundred eighteen million, three hundred eight thousand, nine hundred ninety-one".