402546404645191 has 2 divisors, whose sum is σ = 402546404645192. Its totient is φ = 402546404645190.

The previous prime is 402546404645173. The next prime is 402546404645237. The reversal of 402546404645191 is 191546404645204.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 402546404645191 - 2¹¹ = 402546404643143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402546704645191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201273202322595 + 201273202322596.

It is an arithmetic number, because the mean of its divisors is an integer number (201273202322596).

Almost surely, 2^{402546404645191} is an apocalyptic number.

402546404645191 is a deficient number, since it is larger than the sum of its proper divisors (1).

402546404645191 is an equidigital number, since it uses as much as digits as its factorization.

402546404645191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16588800, while the sum is 55.

The spelling of 402546404645191 in words is "four hundred two trillion, five hundred forty-six billion, four hundred four million, six hundred forty-five thousand, one hundred ninety-one".