630721415672104 has 8 divisors (see below), whose sum is σ = 1182602654385210. Its totient is φ = 315360707836048.

The previous prime is 630721415672081. The next prime is 630721415672119. The reversal of 630721415672104 is 401276514127036.

It can be written as a sum of positive squares in only one way, i.e., 433534945536004 + 197186470136100 = 20821502^2 + 14042310^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39420088479499 + ... + 39420088479514.

Almost surely, 2^{630721415672104} is an apocalyptic number.

It is an amenable number.

630721415672104 is a deficient number, since it is larger than the sum of its proper divisors (551881238713106).

630721415672104 is a wasteful number, since it uses less digits than its factorization.

630721415672104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78840176959019 (or 78840176959015 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 49.

The spelling of 630721415672104 in words is "six hundred thirty trillion, seven hundred twenty-one billion, four hundred fifteen million, six hundred seventy-two thousand, one hundred four".