666140615750041 has 2 divisors, whose sum is σ = 666140615750042. Its totient is φ = 666140615750040.

The previous prime is 666140615750021. The next prime is 666140615750059. The reversal of 666140615750041 is 140057516041666.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 365040764481600 + 301099851268441 = 19106040^2 + 17352229^2 .

It is a cyclic number.

It is not a de Polignac number, because 666140615750041 - 2¹⁷ = 666140615618969 is a prime.

It is not a weakly prime, because it can be changed into another prime (666140615750011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333070307875020 + 333070307875021.

It is an arithmetic number, because the mean of its divisors is an integer number (333070307875021).

Almost surely, 2^{666140615750041} is an apocalyptic number.

It is an amenable number.

666140615750041 is a deficient number, since it is larger than the sum of its proper divisors (1).

666140615750041 is an equidigital number, since it uses as much as digits as its factorization.

666140615750041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3628800, while the sum is 52.

The spelling of 666140615750041 in words is "six hundred sixty-six trillion, one hundred forty billion, six hundred fifteen million, seven hundred fifty thousand, forty-one".