2243312401691 has 2 divisors, whose sum is σ = 2243312401692. Its totient is φ = 2243312401690.

The previous prime is 2243312401661. The next prime is 2243312401709. The reversal of 2243312401691 is 1961042133422.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2243312401691 - 2³⁰ = 2242238659867 is a prime.

It is not a weakly prime, because it can be changed into another prime (2243312401661) 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, 1121656200845 + 1121656200846.

It is an arithmetic number, because the mean of its divisors is an integer number (1121656200846).

Almost surely, 2^{2243312401691} is an apocalyptic number.

2243312401691 is a deficient number, since it is larger than the sum of its proper divisors (1).

2243312401691 is an equidigital number, since it uses as much as digits as its factorization.

2243312401691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 38.

The spelling of 2243312401691 in words is "two trillion, two hundred forty-three billion, three hundred twelve million, four hundred one thousand, six hundred ninety-one".