16399346398297 has 2 divisors, whose sum is σ = 16399346398298. Its totient is φ = 16399346398296.

The previous prime is 16399346398133. The next prime is 16399346398361. The reversal of 16399346398297 is 79289364399361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14114928776256 + 2284417622041 = 3756984^2 + 1511429^2 .

It is a cyclic number.

It is not a de Polignac number, because 16399346398297 - 2¹⁵ = 16399346365529 is a prime.

It is a super-5 number, since 5×16399346398297⁵ (a number of 67 digits) contains 55555 as substring.

It is not a weakly prime, because it can be changed into another prime (16399346308297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8199673199148 + 8199673199149.

It is an arithmetic number, because the mean of its divisors is an integer number (8199673199149).

Almost surely, 2^{16399346398297} is an apocalyptic number.

It is an amenable number.

16399346398297 is a deficient number, since it is larger than the sum of its proper divisors (1).

16399346398297 is an equidigital number, since it uses as much as digits as its factorization.

16399346398297 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2857026816, while the sum is 79.

The spelling of 16399346398297 in words is "sixteen trillion, three hundred ninety-nine billion, three hundred forty-six million, three hundred ninety-eight thousand, two hundred ninety-seven".