400166116327 has 2 divisors, whose sum is σ = 400166116328. Its totient is φ = 400166116326.

The previous prime is 400166116211. The next prime is 400166116349. The reversal of 400166116327 is 723611661004.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 400166116327 - 2²⁷ = 400031898599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400866116327) 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, 200083058163 + 200083058164.

It is an arithmetic number, because the mean of its divisors is an integer number (200083058164).

Almost surely, 2^400166116327 is an apocalyptic number.

400166116327 is a deficient number, since it is larger than the sum of its proper divisors (1).

400166116327 is an equidigital number, since it uses as much as digits as its factorization.

400166116327 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 37.

The spelling of 400166116327 in words is "four hundred billion, one hundred sixty-six million, one hundred sixteen thousand, three hundred twenty-seven".