53368888021 has 2 divisors, whose sum is σ = 53368888022. Its totient is φ = 53368888020.

The previous prime is 53368887973. The next prime is 53368888063. The reversal of 53368888021 is 12088886335.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45119707396 + 8249180625 = 212414^2 + 90825^2 .

It is a cyclic number.

It is not a de Polignac number, because 53368888021 - 2²⁵ = 53335333589 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53368888021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53368888091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26684444010 + 26684444011.

It is an arithmetic number, because the mean of its divisors is an integer number (26684444011).

Almost surely, 2^53368888021 is an apocalyptic number.

It is an amenable number.

53368888021 is a deficient number, since it is larger than the sum of its proper divisors (1).

53368888021 is an equidigital number, since it uses as much as digits as its factorization.

53368888021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2211840, while the sum is 52.

The spelling of 53368888021 in words is "fifty-three billion, three hundred sixty-eight million, eight hundred eighty-eight thousand, twenty-one".