666926319190 has 16 divisors (see below), whose sum is σ = 1229747067360. Its totient is φ = 260263929280.

The previous prime is 666926319181. The next prime is 666926319271. The reversal of 666926319190 is 91913629666.

It is a super-2 number, since 2×666926319190² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 813324370 + ... + 813325189.

It is an arithmetic number, because the mean of its divisors is an integer number (76859191710).

Almost surely, 2^666926319190 is an apocalyptic number.

666926319190 is a deficient number, since it is larger than the sum of its proper divisors (562820748170).

666926319190 is a wasteful number, since it uses less digits than its factorization.

666926319190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1626649607.

The product of its (nonzero) digits is 5668704, while the sum is 58.

The spelling of 666926319190 in words is "six hundred sixty-six billion, nine hundred twenty-six million, three hundred nineteen thousand, one hundred ninety".