666608263008 has 48 divisors (see below), whose sum is σ = 1756351764720. Its totient is φ = 221376713216.

The previous prime is 666608263003. The next prime is 666608263033. The reversal of 666608263008 is 800362806666.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666608263001) 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, 12880935 + ... + 12932582.

It is an arithmetic number, because the mean of its divisors is an integer number (36590661765).

Almost surely, 2^666608263008 is an apocalyptic number.

It is an amenable number.

666608263008 is an abundant number, since it is smaller than the sum of its proper divisors (1089743501712).

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

666608263008 is a wasteful number, since it uses less digits than its factorization.

666608263008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25813799 (or 25813791 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 51.

The spelling of 666608263008 in words is "six hundred sixty-six billion, six hundred eight million, two hundred sixty-three thousand, eight".