20192919200897 has 2 divisors, whose sum is σ = 20192919200898. Its totient is φ = 20192919200896.

The previous prime is 20192919200837. The next prime is 20192919200953. The reversal of 20192919200897 is 79800291929102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20164329801841 + 28589399056 = 4490471^2 + 169084^2 .

It is a cyclic number.

It is not a de Polignac number, because 20192919200897 - 2²⁰ = 20192918152321 is a prime.

It is not a weakly prime, because it can be changed into another prime (20192919200837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10096459600448 + 10096459600449.

It is an arithmetic number, because the mean of its divisors is an integer number (10096459600449).

Almost surely, 2^{20192919200897} is an apocalyptic number.

It is an amenable number.

20192919200897 is a deficient number, since it is larger than the sum of its proper divisors (1).

20192919200897 is an equidigital number, since it uses as much as digits as its factorization.

20192919200897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2939328, while the sum is 59.

The spelling of 20192919200897 in words is "twenty trillion, one hundred ninety-two billion, nine hundred nineteen million, two hundred thousand, eight hundred ninety-seven".