20200200199957 has 2 divisors, whose sum is σ = 20200200199958. Its totient is φ = 20200200199956.

The previous prime is 20200200199943. The next prime is 20200200200041. The reversal of 20200200199957 is 75999100200202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20180633505796 + 19566694161 = 4492286^2 + 139881^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20200200199957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20200200199457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10100100099978 + 10100100099979.

It is an arithmetic number, because the mean of its divisors is an integer number (10100100099979).

Almost surely, 2^{20200200199957} is an apocalyptic number.

It is an amenable number.

20200200199957 is a deficient number, since it is larger than the sum of its proper divisors (1).

20200200199957 is an equidigital number, since it uses as much as digits as its factorization.

20200200199957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 204120, while the sum is 46.

The spelling of 20200200199957 in words is "twenty trillion, two hundred billion, two hundred million, one hundred ninety-nine thousand, nine hundred fifty-seven".