12900188398897 has 2 divisors, whose sum is σ = 12900188398898. Its totient is φ = 12900188398896.

The previous prime is 12900188398859. The next prime is 12900188398939. The reversal of 12900188398897 is 79889388100921.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12870414551296 + 29773847601 = 3587536^2 + 172551^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12900188398897 is a prime.

It is not a weakly prime, because it can be changed into another prime (12900188798897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6450094199448 + 6450094199449.

It is an arithmetic number, because the mean of its divisors is an integer number (6450094199449).

Almost surely, 2^{12900188398897} is an apocalyptic number.

It is an amenable number.

12900188398897 is a deficient number, since it is larger than the sum of its proper divisors (1).

12900188398897 is an equidigital number, since it uses as much as digits as its factorization.

12900188398897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 125411328, while the sum is 73.

The spelling of 12900188398897 in words is "twelve trillion, nine hundred billion, one hundred eighty-eight million, three hundred ninety-eight thousand, eight hundred ninety-seven".