630777716640 has 72 divisors (see below), whose sum is σ = 2152528962948. Its totient is φ = 168207390720.

The previous prime is 630777716633. The next prime is 630777716651. The reversal of 630777716640 is 46617777036.

It can be written as a sum of positive squares in 2 ways, for example, as 626712889104 + 4064827536 = 791652^2 + 63756^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 219018601 + ... + 219021480.

Almost surely, 2^630777716640 is an apocalyptic number.

630777716640 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

630777716640 is an abundant number, since it is smaller than the sum of its proper divisors (1521751246308).

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

630777716640 is a wasteful number, since it uses less digits than its factorization.

630777716640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438040102 (or 438040091 counting only the distinct ones).

The product of its (nonzero) digits is 6223392, while the sum is 54.

The spelling of 630777716640 in words is "six hundred thirty billion, seven hundred seventy-seven million, seven hundred sixteen thousand, six hundred forty".