646163130063 has 32 divisors (see below), whose sum is σ = 980963488512. Its totient is φ = 374853689600.

The previous prime is 646163130049. The next prime is 646163130083. The reversal of 646163130063 is 360031361646.

It is a cyclic number.

It is not a de Polignac number, because 646163130063 - 2³⁰ = 645089388239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646163130083) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4433745 + ... + 4577162.

It is an arithmetic number, because the mean of its divisors is an integer number (30655109016).

Almost surely, 2^646163130063 is an apocalyptic number.

646163130063 is a deficient number, since it is larger than the sum of its proper divisors (334800358449).

646163130063 is a wasteful number, since it uses less digits than its factorization.

646163130063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9011015.

The product of its (nonzero) digits is 139968, while the sum is 39.

The spelling of 646163130063 in words is "six hundred forty-six billion, one hundred sixty-three million, one hundred thirty thousand, sixty-three".