16451739722917 has 2 divisors, whose sum is σ = 16451739722918. Its totient is φ = 16451739722916.

The previous prime is 16451739722851. The next prime is 16451739722941. The reversal of 16451739722917 is 71922793715461.

16451739722917 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14029526851201 + 2422212871716 = 3745601^2 + 1556346^2 .

It is a cyclic number.

It is not a de Polignac number, because 16451739722917 - 2²⁷ = 16451605505189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16451439722917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8225869861458 + 8225869861459.

It is an arithmetic number, because the mean of its divisors is an integer number (8225869861459).

Almost surely, 2^{16451739722917} is an apocalyptic number.

It is an amenable number.

16451739722917 is a deficient number, since it is larger than the sum of its proper divisors (1).

16451739722917 is an equidigital number, since it uses as much as digits as its factorization.

16451739722917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40007520, while the sum is 64.

The spelling of 16451739722917 in words is "sixteen trillion, four hundred fifty-one billion, seven hundred thirty-nine million, seven hundred twenty-two thousand, nine hundred seventeen".