15999022113317 has 2 divisors, whose sum is σ = 15999022113318. Its totient is φ = 15999022113316.

The previous prime is 15999022113301. The next prime is 15999022113359. The reversal of 15999022113317 is 71331122099951.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14480148267841 + 1518873845476 = 3805279^2 + 1232426^2 .

It is a cyclic number.

It is not a de Polignac number, because 15999022113317 - 2⁴ = 15999022113301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15999022113377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7999511056658 + 7999511056659.

It is an arithmetic number, because the mean of its divisors is an integer number (7999511056659).

Almost surely, 2^{15999022113317} is an apocalyptic number.

It is an amenable number.

15999022113317 is a deficient number, since it is larger than the sum of its proper divisors (1).

15999022113317 is an equidigital number, since it uses as much as digits as its factorization.

15999022113317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 918540, while the sum is 53.

The spelling of 15999022113317 in words is "fifteen trillion, nine hundred ninety-nine billion, twenty-two million, one hundred thirteen thousand, three hundred seventeen".