20202100575913 has 2 divisors, whose sum is σ = 20202100575914. Its totient is φ = 20202100575912.

The previous prime is 20202100575911. The next prime is 20202100575941. The reversal of 20202100575913 is 31957500120202.

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., 10905132453264 + 9296968122649 = 3302292^2 + 3049093^2 .

It is a cyclic number.

It is not a de Polignac number, because 20202100575913 - 2¹ = 20202100575911 is a prime.

Together with 20202100575911, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20202100575911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10101050287956 + 10101050287957.

It is an arithmetic number, because the mean of its divisors is an integer number (10101050287957).

Almost surely, 2^{20202100575913} is an apocalyptic number.

It is an amenable number.

20202100575913 is a deficient number, since it is larger than the sum of its proper divisors (1).

20202100575913 is an equidigital number, since it uses as much as digits as its factorization.

20202100575913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37800, while the sum is 37.

The spelling of 20202100575913 in words is "twenty trillion, two hundred two billion, one hundred million, five hundred seventy-five thousand, nine hundred thirteen".