16723055698897 has 2 divisors, whose sum is σ = 16723055698898. Its totient is φ = 16723055698896.

The previous prime is 16723055698879. The next prime is 16723055698919. The reversal of 16723055698897 is 79889655032761.

Together with previous prime (16723055698879) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8966167854736 + 7756887844161 = 2994356^2 + 2785119^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16723055698897 is a prime.

It is a super-2 number, since 2×16723055698897² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16723055698847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8361527849448 + 8361527849449.

It is an arithmetic number, because the mean of its divisors is an integer number (8361527849449).

Almost surely, 2^{16723055698897} is an apocalyptic number.

It is an amenable number.

16723055698897 is a deficient number, since it is larger than the sum of its proper divisors (1).

16723055698897 is an equidigital number, since it uses as much as digits as its factorization.

16723055698897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1371686400, while the sum is 76.

The spelling of 16723055698897 in words is "sixteen trillion, seven hundred twenty-three billion, fifty-five million, six hundred ninety-eight thousand, eight hundred ninety-seven".