666150610610 has 16 divisors (see below), whose sum is σ = 1202285773656. Its totient is φ = 265745872128.

The previous prime is 666150610603. The next prime is 666150610627. The reversal of 666150610610 is 16016051666.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 404787340441 + 261363270169 = 636229^2 + 511237^2 .

It is a Curzon number.

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, 89292599 + ... + 89300058.

Almost surely, 2^666150610610 is an apocalyptic number.

666150610610 is a deficient number, since it is larger than the sum of its proper divisors (536135163046).

666150610610 is a wasteful number, since it uses less digits than its factorization.

666150610610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178593037.

The product of its (nonzero) digits is 38880, while the sum is 38.

The spelling of 666150610610 in words is "six hundred sixty-six billion, one hundred fifty million, six hundred ten thousand, six hundred ten".