630810647081 has 16 divisors (see below), whose sum is σ = 656899296768. Its totient is φ = 605091676800.

The previous prime is 630810646993. The next prime is 630810647111. The reversal of 630810647081 is 180746018036.

It is a cyclic number.

It is not a de Polignac number, because 630810647081 - 2³⁰ = 629736905257 is a prime.

It is a super-2 number, since 2×630810647081² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (630810644081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3389651 + ... + 3570903.

It is an arithmetic number, because the mean of its divisors is an integer number (41056206048).

Almost surely, 2^630810647081 is an apocalyptic number.

It is an amenable number.

630810647081 is a deficient number, since it is larger than the sum of its proper divisors (26088649687).

630810647081 is a wasteful number, since it uses less digits than its factorization.

630810647081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182272.

The product of its (nonzero) digits is 193536, while the sum is 44.

The spelling of 630810647081 in words is "six hundred thirty billion, eight hundred ten million, six hundred forty-seven thousand, eighty-one".