202099999973 has 2 divisors, whose sum is σ = 202099999974. Its totient is φ = 202099999972.

The previous prime is 202099999967. The next prime is 202100000059. The reversal of 202099999973 is 379999990202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 172509807649 + 29590192324 = 415343^2 + 172018^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202099999973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202099993973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101049999986 + 101049999987.

It is an arithmetic number, because the mean of its divisors is an integer number (101049999987).

Almost surely, 2^202099999973 is an apocalyptic number.

It is an amenable number.

202099999973 is a deficient number, since it is larger than the sum of its proper divisors (1).

202099999973 is an equidigital number, since it uses as much as digits as its factorization.

202099999973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 44641044, while the sum is 68.

The spelling of 202099999973 in words is "two hundred two billion, ninety-nine million, nine hundred ninety-nine thousand, nine hundred seventy-three".