2161367135999 has 2 divisors, whose sum is σ = 2161367136000. Its totient is φ = 2161367135998.

The previous prime is 2161367135909. The next prime is 2161367136011. The reversal of 2161367135999 is 9995317631612.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2161367135999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2161367135909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1080683567999 + 1080683568000.

It is an arithmetic number, because the mean of its divisors is an integer number (1080683568000).

Almost surely, 2^{2161367135999} is an apocalyptic number.

2161367135999 is a deficient number, since it is larger than the sum of its proper divisors (1).

2161367135999 is an equidigital number, since it uses as much as digits as its factorization.

2161367135999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16533720, while the sum is 62.

The spelling of 2161367135999 in words is "two trillion, one hundred sixty-one billion, three hundred sixty-seven million, one hundred thirty-five thousand, nine hundred ninety-nine".