630155939172 has 12 divisors (see below), whose sum is σ = 1470363858096. Its totient is φ = 210051979720.

The previous prime is 630155939167. The next prime is 630155939227. The reversal of 630155939172 is 271939551036.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26256497454 + ... + 26256497477.

It is an arithmetic number, because the mean of its divisors is an integer number (122530321508).

Almost surely, 2^630155939172 is an apocalyptic number.

It is an amenable number.

630155939172 is an abundant number, since it is smaller than the sum of its proper divisors (840207918924).

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

630155939172 is a wasteful number, since it uses less digits than its factorization.

630155939172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52512994938 (or 52512994936 counting only the distinct ones).

The product of its (nonzero) digits is 1530900, while the sum is 51.

The spelling of 630155939172 in words is "six hundred thirty billion, one hundred fifty-five million, nine hundred thirty-nine thousand, one hundred seventy-two".