202020497923 has 2 divisors, whose sum is σ = 202020497924. Its totient is φ = 202020497922.

The previous prime is 202020497893. The next prime is 202020497957. The reversal of 202020497923 is 329794020202.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202020497923 is a prime.

It is not a weakly prime, because it can be changed into another prime (202020497993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101010248961 + 101010248962.

It is an arithmetic number, because the mean of its divisors is an integer number (101010248962).

Almost surely, 2^202020497923 is an apocalyptic number.

202020497923 is a deficient number, since it is larger than the sum of its proper divisors (1).

202020497923 is an equidigital number, since it uses as much as digits as its factorization.

202020497923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 40.

The spelling of 202020497923 in words is "two hundred two billion, twenty million, four hundred ninety-seven thousand, nine hundred twenty-three".