202113400057 has 2 divisors, whose sum is σ = 202113400058. Its totient is φ = 202113400056.

The previous prime is 202113400019. The next prime is 202113400079. The reversal of 202113400057 is 750004311202.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 195933710736 + 6179689321 = 442644^2 + 78611^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202113400057 is a prime.

It is not a weakly prime, because it can be changed into another prime (202113406057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101056700028 + 101056700029.

It is an arithmetic number, because the mean of its divisors is an integer number (101056700029).

Almost surely, 2^202113400057 is an apocalyptic number.

It is an amenable number.

202113400057 is a deficient number, since it is larger than the sum of its proper divisors (1).

202113400057 is an equidigital number, since it uses as much as digits as its factorization.

202113400057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 25.

Adding to 202113400057 its reverse (750004311202), we get a palindrome (952117711259).

The spelling of 202113400057 in words is "two hundred two billion, one hundred thirteen million, four hundred thousand, fifty-seven".