666357054164231 has 32 divisors (see below), whose sum is σ = 700869803208960. Its totient is φ = 632647960648704.

The previous prime is 666357054164209. The next prime is 666357054164237. The reversal of 666357054164231 is 132461450753666.

It is a cyclic number.

It is not a de Polignac number, because 666357054164231 - 2¹⁸ = 666357053902087 is a prime.

It is a super-2 number, since 2×666357054164231² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666357054164237) 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 31 ways as a sum of consecutive naturals, for example, 5750695511 + ... + 5750811383.

It is an arithmetic number, because the mean of its divisors is an integer number (21902181350280).

Almost surely, 2^{666357054164231} is an apocalyptic number.

666357054164231 is a deficient number, since it is larger than the sum of its proper divisors (34512749044729).

666357054164231 is a wasteful number, since it uses less digits than its factorization.

666357054164231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121215.

The product of its (nonzero) digits is 65318400, while the sum is 59.

The spelling of 666357054164231 in words is "six hundred sixty-six trillion, three hundred fifty-seven billion, fifty-four million, one hundred sixty-four thousand, two hundred thirty-one".