202021400057 has 2 divisors, whose sum is σ = 202021400058. Its totient is φ = 202021400056.

The previous prime is 202021400027. The next prime is 202021400101. The reversal of 202021400057 is 750004120202.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130121804176 + 71899595881 = 360724^2 + 268141^2 .

It is a cyclic number.

It is not a de Polignac number, because 202021400057 - 2²⁸ = 201752964601 is a prime.

It is not a weakly prime, because it can be changed into another prime (202021400027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101010700028 + 101010700029.

It is an arithmetic number, because the mean of its divisors is an integer number (101010700029).

Almost surely, 2^202021400057 is an apocalyptic number.

It is an amenable number.

202021400057 is a deficient number, since it is larger than the sum of its proper divisors (1).

202021400057 is an equidigital number, since it uses as much as digits as its factorization.

202021400057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1120, while the sum is 23.

Adding to 202021400057 its reverse (750004120202), we get a palindrome (952025520259).

The spelling of 202021400057 in words is "two hundred two billion, twenty-one million, four hundred thousand, fifty-seven".