666113457338 has 16 divisors (see below), whose sum is σ = 1141926232320. Its totient is φ = 285472833936.

The previous prime is 666113457337. The next prime is 666113457377. The reversal of 666113457338 is 833754311666.

It is a happy number.

It is a super-3 number, since 3×666113457338³ (a number of 36 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 666113457338.

It is not an unprimeable number, because it can be changed into a prime (666113457337) by changing a digit.

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, 690920 + ... + 1345212.

It is an arithmetic number, because the mean of its divisors is an integer number (71370389520).

Almost surely, 2^666113457338 is an apocalyptic number.

666113457338 is a deficient number, since it is larger than the sum of its proper divisors (475812774982).

666113457338 is a wasteful number, since it uses less digits than its factorization.

666113457338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 727021.

The product of its digits is 6531840, while the sum is 53.

The spelling of 666113457338 in words is "six hundred sixty-six billion, one hundred thirteen million, four hundred fifty-seven thousand, three hundred thirty-eight".