16453125121 has 2 divisors, whose sum is σ = 16453125122. Its totient is φ = 16453125120.

The previous prime is 16453125083. The next prime is 16453125127. The reversal of 16453125121 is 12152135461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12601185025 + 3851940096 = 112255^2 + 62064^2 .

It is a cyclic number.

It is not a de Polignac number, because 16453125121 - 2¹³ = 16453116929 is a prime.

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, 8226562560 + 8226562561.

It is an arithmetic number, because the mean of its divisors is an integer number (8226562561).

Almost surely, 2^16453125121 is an apocalyptic number.

It is an amenable number.

16453125121 is a deficient number, since it is larger than the sum of its proper divisors (1).

16453125121 is an equidigital number, since it uses as much as digits as its factorization.

16453125121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7200, while the sum is 31.

The spelling of 16453125121 in words is "sixteen billion, four hundred fifty-three million, one hundred twenty-five thousand, one hundred twenty-one".