56365566516839 has 2 divisors, whose sum is σ = 56365566516840. Its totient is φ = 56365566516838.

The previous prime is 56365566516767. The next prime is 56365566516871. The reversal of 56365566516839 is 93861566556365.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56365566516839 - 2¹² = 56365566512743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56365566510839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28182783258419 + 28182783258420.

It is an arithmetic number, because the mean of its divisors is an integer number (28182783258420).

Almost surely, 2^{56365566516839} is an apocalyptic number.

56365566516839 is a deficient number, since it is larger than the sum of its proper divisors (1).

56365566516839 is an equidigital number, since it uses as much as digits as its factorization.

56365566516839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3149280000, while the sum is 74.

The spelling of 56365566516839 in words is "fifty-six trillion, three hundred sixty-five billion, five hundred sixty-six million, five hundred sixteen thousand, eight hundred thirty-nine".