666808008148 has 12 divisors (see below), whose sum is σ = 1182899138260. Its totient is φ = 328836825792.

The previous prime is 666808008103. The next prime is 666808008149. The reversal of 666808008148 is 841800808666.

It can be written as a sum of positive squares in 2 ways, for example, as 315666432964 + 351141575184 = 561842^2 + 592572^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666808008149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1141794243 + ... + 1141794826.

Almost surely, 2^666808008148 is an apocalyptic number.

It is an amenable number.

666808008148 is a deficient number, since it is larger than the sum of its proper divisors (516091130112).

666808008148 is a wasteful number, since it uses less digits than its factorization.

666808008148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2283589146 (or 2283589144 counting only the distinct ones).

The product of its (nonzero) digits is 3538944, while the sum is 55.

The spelling of 666808008148 in words is "six hundred sixty-six billion, eight hundred eight million, eight thousand, one hundred forty-eight".