666140615746007 has 2 divisors, whose sum is σ = 666140615746008. Its totient is φ = 666140615746006.

The previous prime is 666140615745961. The next prime is 666140615746043. The reversal of 666140615746007 is 700647516041666.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 666140615746007 - 2⁸ = 666140615745751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (666140615746607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333070307873003 + 333070307873004.

It is an arithmetic number, because the mean of its divisors is an integer number (333070307873004).

Almost surely, 2^{666140615746007} is an apocalyptic number.

666140615746007 is a deficient number, since it is larger than the sum of its proper divisors (1).

666140615746007 is an equidigital number, since it uses as much as digits as its factorization.

666140615746007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30481920, while the sum is 59.

The spelling of 666140615746007 in words is "six hundred sixty-six trillion, one hundred forty billion, six hundred fifteen million, seven hundred forty-six thousand, seven".