630121615204 has 27 divisors (see below), whose sum is σ = 1118231079147. Its totient is φ = 310687752384.

The previous prime is 630121615181. The next prime is 630121615229. The reversal of 630121615204 is 402516121036.

It is a happy number.

The square root of 630121615204 is 793802.

It is a perfect power (a square), and thus also a powerful number.

630121615204 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 11004429604 + 619117185600 = 104902^2 + 786840^2 .

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 115892374 + ... + 115897810.

Almost surely, 2^630121615204 is an apocalyptic number.

630121615204 is the 793802-nd square number.

It is an amenable number.

630121615204 is a deficient number, since it is larger than the sum of its proper divisors (488109463943).

630121615204 is an frugal number, since it uses more digits than its factorization.

630121615204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11024 (or 5512 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The spelling of 630121615204 in words is "six hundred thirty billion, one hundred twenty-one million, six hundred fifteen thousand, two hundred four".