666368620007 has 2 divisors, whose sum is σ = 666368620008. Its totient is φ = 666368620006.

The previous prime is 666368619997. The next prime is 666368620037. The reversal of 666368620007 is 700026863666.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 666368620007 - 2³⁸ = 391490713063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (666368620037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333184310003 + 333184310004.

It is an arithmetic number, because the mean of its divisors is an integer number (333184310004).

Almost surely, 2^666368620007 is an apocalyptic number.

666368620007 is a deficient number, since it is larger than the sum of its proper divisors (1).

666368620007 is an equidigital number, since it uses as much as digits as its factorization.

666368620007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2612736, while the sum is 50.

The spelling of 666368620007 in words is "six hundred sixty-six billion, three hundred sixty-eight million, six hundred twenty thousand, seven".