663514857381688 has 32 divisors (see below), whose sum is σ = 1345395430209600. Its totient is φ = 304956297491328.

The previous prime is 663514857381659. The next prime is 663514857381689. The reversal of 663514857381688 is 886183758415366.

It is a Smith number, since the sum of its digits (79) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663514857381689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13347152031 + ... + 13347201742.

It is an arithmetic number, because the mean of its divisors is an integer number (42043607194050).

Almost surely, 2^{663514857381688} is an apocalyptic number.

It is an amenable number.

663514857381688 is an abundant number, since it is smaller than the sum of its proper divisors (681880572827912).

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

663514857381688 is a wasteful number, since it uses less digits than its factorization.

663514857381688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26694354031 (or 26694354027 counting only the distinct ones).

The product of its digits is 5573836800, while the sum is 79.

The spelling of 663514857381688 in words is "six hundred sixty-three trillion, five hundred fourteen billion, eight hundred fifty-seven million, three hundred eighty-one thousand, six hundred eighty-eight".