666137704041776 has 40 divisors (see below), whose sum is σ = 1299739474441824. Its totient is φ = 330723930401280.

The previous prime is 666137704041751. The next prime is 666137704041791. The reversal of 666137704041776 is 677140407731666.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85807820 + ... + 93248363.

Almost surely, 2^{666137704041776} is an apocalyptic number.

It is an amenable number.

666137704041776 is a deficient number, since it is larger than the sum of its proper divisors (633601770400048).

666137704041776 is a wasteful number, since it uses less digits than its factorization.

666137704041776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179057829 (or 179057823 counting only the distinct ones).

The product of its (nonzero) digits is 149361408, while the sum is 65.

The spelling of 666137704041776 in words is "six hundred sixty-six trillion, one hundred thirty-seven billion, seven hundred four million, forty-one thousand, seven hundred seventy-six".