185168495445407 has 2 divisors, whose sum is σ = 185168495445408. Its totient is φ = 185168495445406.

The previous prime is 185168495445341. The next prime is 185168495445517. The reversal of 185168495445407 is 704544594861581.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-185168495445407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (185168495445907) 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 as a sum of consecutive naturals, namely, 92584247722703 + 92584247722704.

It is an arithmetic number, because the mean of its divisors is an integer number (92584247722704).

Almost surely, 2^{185168495445407} is an apocalyptic number.

185168495445407 is a deficient number, since it is larger than the sum of its proper divisors (1).

185168495445407 is an equidigital number, since it uses as much as digits as its factorization.

185168495445407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 774144000, while the sum is 71.

The spelling of 185168495445407 in words is "one hundred eighty-five trillion, one hundred sixty-eight billion, four hundred ninety-five million, four hundred forty-five thousand, four hundred seven".