16453125197 has 2 divisors, whose sum is σ = 16453125198. Its totient is φ = 16453125196.

The previous prime is 16453125149. The next prime is 16453125203. The reversal of 16453125197 is 79152135461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16452166756 + 958441 = 128266^2 + 979^2 .

It is a cyclic number.

It is not a de Polignac number, because 16453125197 - 2¹⁰ = 16453124173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16453125127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8226562598 + 8226562599.

It is an arithmetic number, because the mean of its divisors is an integer number (8226562599).

Almost surely, 2^16453125197 is an apocalyptic number.

It is an amenable number.

16453125197 is a deficient number, since it is larger than the sum of its proper divisors (1).

16453125197 is an equidigital number, since it uses as much as digits as its factorization.

16453125197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 226800, while the sum is 44.

The spelling of 16453125197 in words is "sixteen billion, four hundred fifty-three million, one hundred twenty-five thousand, one hundred ninety-seven".