202420097917 has 2 divisors, whose sum is σ = 202420097918. Its totient is φ = 202420097916.

The previous prime is 202420097879. The next prime is 202420097923. The reversal of 202420097917 is 719790024202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 141427892761 + 60992205156 = 376069^2 + 246966^2 .

It is a cyclic number.

It is not a de Polignac number, because 202420097917 - 2¹⁵ = 202420065149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202420097417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101210048958 + 101210048959.

It is an arithmetic number, because the mean of its divisors is an integer number (101210048959).

Almost surely, 2^202420097917 is an apocalyptic number.

It is an amenable number.

202420097917 is a deficient number, since it is larger than the sum of its proper divisors (1).

202420097917 is an equidigital number, since it uses as much as digits as its factorization.

202420097917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 127008, while the sum is 43.

The spelling of 202420097917 in words is "two hundred two billion, four hundred twenty million, ninety-seven thousand, nine hundred seventeen".