149210388666 has 24 divisors (see below), whose sum is σ = 323400423060. Its totient is φ = 49719681216.

The previous prime is 149210388643. The next prime is 149210388737. The reversal of 149210388666 is 666883012941.

It can be written as a sum of positive squares in 2 ways, for example, as 148626441441 + 583947225 = 385521^2 + 24165^2 .

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, 1372435 + ... + 1477158.

Almost surely, 2^149210388666 is an apocalyptic number.

149210388666 is an abundant number, since it is smaller than the sum of its proper divisors (174190034394).

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

149210388666 is a wasteful number, since it uses less digits than its factorization.

149210388666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2852510 (or 2852507 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 54.

The spelling of 149210388666 in words is "one hundred forty-nine billion, two hundred ten million, three hundred eighty-eight thousand, six hundred sixty-six".