630657760642 has 64 divisors (see below), whose sum is σ = 1227727468800. Its totient is φ = 235943746560.

The previous prime is 630657760639. The next prime is 630657760679. The reversal of 630657760642 is 246067756036.

It is a super-2 number, since 2×630657760642² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 630657760642.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1807342 + ... + 2127862.

It is an arithmetic number, because the mean of its divisors is an integer number (19183241700).

Almost surely, 2^630657760642 is an apocalyptic number.

630657760642 is a deficient number, since it is larger than the sum of its proper divisors (597069708158).

630657760642 is a wasteful number, since it uses less digits than its factorization.

630657760642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321131.

The product of its (nonzero) digits is 7620480, while the sum is 52.

The spelling of 630657760642 in words is "six hundred thirty billion, six hundred fifty-seven million, seven hundred sixty thousand, six hundred forty-two".