2161640313199 has 2 divisors, whose sum is σ = 2161640313200. Its totient is φ = 2161640313198.

The previous prime is 2161640313127. The next prime is 2161640313227. The reversal of 2161640313199 is 9913130461612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2161640313199 - 2¹¹ = 2161640311151 is a prime.

It is a super-2 number, since 2×2161640313199² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2161640314199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1080820156599 + 1080820156600.

It is an arithmetic number, because the mean of its divisors is an integer number (1080820156600).

Almost surely, 2^{2161640313199} is an apocalyptic number.

2161640313199 is a deficient number, since it is larger than the sum of its proper divisors (1).

2161640313199 is an equidigital number, since it uses as much as digits as its factorization.

2161640313199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 209952, while the sum is 46.

The spelling of 2161640313199 in words is "two trillion, one hundred sixty-one billion, six hundred forty million, three hundred thirteen thousand, one hundred ninety-nine".