56321238365893 has 2 divisors, whose sum is σ = 56321238365894. Its totient is φ = 56321238365892.

The previous prime is 56321238365869. The next prime is 56321238365921. The reversal of 56321238365893 is 39856383212365.

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., 47546858348929 + 8774380016964 = 6895423^2 + 2962158^2 .

It is a cyclic number.

It is not a de Polignac number, because 56321238365893 - 2²¹ = 56321236268741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56321238366893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28160619182946 + 28160619182947.

It is an arithmetic number, because the mean of its divisors is an integer number (28160619182947).

Almost surely, 2^{56321238365893} is an apocalyptic number.

It is an amenable number.

56321238365893 is a deficient number, since it is larger than the sum of its proper divisors (1).

56321238365893 is an equidigital number, since it uses as much as digits as its factorization.

56321238365893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 167961600, while the sum is 64.

The spelling of 56321238365893 in words is "fifty-six trillion, three hundred twenty-one billion, two hundred thirty-eight million, three hundred sixty-five thousand, eight hundred ninety-three".