52185488178839 has 2 divisors, whose sum is σ = 52185488178840. Its totient is φ = 52185488178838.

The previous prime is 52185488178757. The next prime is 52185488178877. The reversal of 52185488178839 is 93887188458125.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52185488178839 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 52185488178839.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52185488178899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26092744089419 + 26092744089420.

It is an arithmetic number, because the mean of its divisors is an integer number (26092744089420).

Almost surely, 2^{52185488178839} is an apocalyptic number.

52185488178839 is a deficient number, since it is larger than the sum of its proper divisors (1).

52185488178839 is an equidigital number, since it uses as much as digits as its factorization.

52185488178839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1238630400, while the sum is 77.

The spelling of 52185488178839 in words is "fifty-two trillion, one hundred eighty-five billion, four hundred eighty-eight million, one hundred seventy-eight thousand, eight hundred thirty-nine".