663664118908 has 36 divisors (see below), whose sum is σ = 1355374801872. Its totient is φ = 283512895680.

The previous prime is 663664118899. The next prime is 663664118917. The reversal of 663664118908 is 809811466366.

It is an interprime number because it is at equal distance from previous prime (663664118899) and next prime (663664118917).

It is a super-2 number, since 2×663664118908² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5382841 + ... + 5504752.

It is an arithmetic number, because the mean of its divisors is an integer number (37649300052).

Almost surely, 2^663664118908 is an apocalyptic number.

It is an amenable number.

663664118908 is an abundant number, since it is smaller than the sum of its proper divisors (691710682964).

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

663664118908 is a wasteful number, since it uses less digits than its factorization.

663664118908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10887922 (or 10887913 counting only the distinct ones).

The product of its (nonzero) digits is 8957952, while the sum is 58.

The spelling of 663664118908 in words is "six hundred sixty-three billion, six hundred sixty-four million, one hundred eighteen thousand, nine hundred eight".