666310292941 has 4 divisors (see below), whose sum is σ = 667330676892. Its totient is φ = 665289908992.

The previous prime is 666310292939. The next prime is 666310293041. The reversal of 666310292941 is 149292013666.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 104141744100 + 562168548841 = 322710^2 + 749779^2 .

It is a cyclic number.

It is not a de Polignac number, because 666310292941 - 2¹ = 666310292939 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666310292341) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 510190996 + ... + 510192301.

It is an arithmetic number, because the mean of its divisors is an integer number (166832669223).

Almost surely, 2^666310292941 is an apocalyptic number.

It is an amenable number.

666310292941 is a deficient number, since it is larger than the sum of its proper divisors (1020383951).

666310292941 is a wasteful number, since it uses less digits than its factorization.

666310292941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1020383950.

The product of its (nonzero) digits is 839808, while the sum is 49.

The spelling of 666310292941 in words is "six hundred sixty-six billion, three hundred ten million, two hundred ninety-two thousand, nine hundred forty-one".