630788560128 has 126 divisors (see below), whose sum is σ = 1887806622954. Its totient is φ = 210262791168.

The previous prime is 630788560117. The next prime is 630788560147. The reversal of 630788560128 is 821065887036.

630788560128 is a `hidden beast` number, since 6 + 3 + 0 + 7 + 8 + 8 + 5 + 601 + 28 = 666.

It can be written as a sum of positive squares in only one way, i.e., 614104187904 + 16684372224 = 783648^2 + 129168^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 1503375 + ... + 1876622.

Almost surely, 2^630788560128 is an apocalyptic number.

It is an amenable number.

630788560128 is an abundant number, since it is smaller than the sum of its proper divisors (1257018062826).

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

630788560128 is an frugal number, since it uses more digits than its factorization.

630788560128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3380031 (or 3380002 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 54.

The spelling of 630788560128 in words is "six hundred thirty billion, seven hundred eighty-eight million, five hundred sixty thousand, one hundred twenty-eight".