663148568631 has 16 divisors (see below), whose sum is σ = 885776083200. Its totient is φ = 441310222080.

The previous prime is 663148568623. The next prime is 663148568683. The reversal of 663148568631 is 136865841366.

It is not a de Polignac number, because 663148568631 - 2³ = 663148568623 is a prime.

It is a super-2 number, since 2×663148568631² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663148568431) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 21913671 + ... + 21943911.

It is an arithmetic number, because the mean of its divisors is an integer number (55361005200).

Almost surely, 2^663148568631 is an apocalyptic number.

663148568631 is a deficient number, since it is larger than the sum of its proper divisors (222627514569).

663148568631 is a wasteful number, since it uses less digits than its factorization.

663148568631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43046.

The product of its digits is 14929920, while the sum is 57.

The spelling of 663148568631 in words is "six hundred sixty-three billion, one hundred forty-eight million, five hundred sixty-eight thousand, six hundred thirty-one".