666040888010 has 16 divisors (see below), whose sum is σ = 1198944290376. Its totient is φ = 266400645888.

The previous prime is 666040887983. The next prime is 666040888021. The reversal of 666040888010 is 10888040666.

It can be written as a sum of positive squares in 4 ways, for example, as 375167275081 + 290873612929 = 612509^2 + 539327^2 .

It is a super-2 number, since 2×666040888010² (a number of 24 digits) contains 22 as substring.

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, 1784819 + ... + 2125478.

Almost surely, 2^666040888010 is an apocalyptic number.

666040888010 is a deficient number, since it is larger than the sum of its proper divisors (532903402366).

666040888010 is a wasteful number, since it uses less digits than its factorization.

666040888010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3927337.

The product of its (nonzero) digits is 442368, while the sum is 47.

The spelling of 666040888010 in words is "six hundred sixty-six billion, forty million, eight hundred eighty-eight thousand, ten".