20200303021957 has 2 divisors, whose sum is σ = 20200303021958. Its totient is φ = 20200303021956.

The previous prime is 20200303021931. The next prime is 20200303022033. The reversal of 20200303021957 is 75912030300202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16854235262881 + 3346067759076 = 4105391^2 + 1829226^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20200303021957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20200303021057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10100151510978 + 10100151510979.

It is an arithmetic number, because the mean of its divisors is an integer number (10100151510979).

Almost surely, 2^{20200303021957} is an apocalyptic number.

It is an amenable number.

20200303021957 is a deficient number, since it is larger than the sum of its proper divisors (1).

20200303021957 is an equidigital number, since it uses as much as digits as its factorization.

20200303021957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 34.

The spelling of 20200303021957 in words is "twenty trillion, two hundred billion, three hundred three million, twenty-one thousand, nine hundred fifty-seven".