630564540005691 has 32 divisors (see below), whose sum is σ = 936672866625600. Its totient is φ = 419250164762880.

The previous prime is 630564540005611. The next prime is 630564540005747. The reversal of 630564540005691 is 196500045465036.

630564540005691 is a `hidden beast` number, since 6 + 3 + 0 + 5 + 6 + 4 + 540 + 0 + 0 + 5 + 6 + 91 = 666.

It is not a de Polignac number, because 630564540005691 - 2³¹ = 630562392522043 is a prime.

It is a super-2 number, since 2×630564540005691² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (630564540005611) 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, 93592735 + ... + 100103591.

It is an arithmetic number, because the mean of its divisors is an integer number (29271027082050).

Almost surely, 2^{630564540005691} is an apocalyptic number.

630564540005691 is a deficient number, since it is larger than the sum of its proper divisors (306108326619909).

630564540005691 is a wasteful number, since it uses less digits than its factorization.

630564540005691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6520476 (or 6520470 counting only the distinct ones).

The product of its (nonzero) digits is 11664000, while the sum is 54.

The spelling of 630564540005691 in words is "six hundred thirty trillion, five hundred sixty-four billion, five hundred forty million, five thousand, six hundred ninety-one".