202020199993 has 2 divisors, whose sum is σ = 202020199994. Its totient is φ = 202020199992.

The previous prime is 202020199967. The next prime is 202020200003. The reversal of 202020199993 is 399991020202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120317409424 + 81702790569 = 346868^2 + 285837^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202020199993 is a prime.

It is a super-2 number, since 2×202020199993² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (202020199963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101010099996 + 101010099997.

It is an arithmetic number, because the mean of its divisors is an integer number (101010099997).

Almost surely, 2^202020199993 is an apocalyptic number.

It is an amenable number.

202020199993 is a deficient number, since it is larger than the sum of its proper divisors (1).

202020199993 is an equidigital number, since it uses as much as digits as its factorization.

202020199993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 157464, while the sum is 46.

The spelling of 202020199993 in words is "two hundred two billion, twenty million, one hundred ninety-nine thousand, nine hundred ninety-three".