663122968266 has 16 divisors (see below), whose sum is σ = 1446813749088. Its totient is φ = 200946354000.

The previous prime is 663122968231. The next prime is 663122968289. The reversal of 663122968266 is 662869221366.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5023658785 + ... + 5023658916.

It is an arithmetic number, because the mean of its divisors is an integer number (90425859318).

Almost surely, 2^663122968266 is an apocalyptic number.

663122968266 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

663122968266 is an abundant number, since it is smaller than the sum of its proper divisors (783690780822).

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

663122968266 is a wasteful number, since it uses less digits than its factorization.

663122968266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10047317717.

The product of its digits is 13436928, while the sum is 57.

The spelling of 663122968266 in words is "six hundred sixty-three billion, one hundred twenty-two million, nine hundred sixty-eight thousand, two hundred sixty-six".