52139758439 has 2 divisors, whose sum is σ = 52139758440. Its totient is φ = 52139758438.

The previous prime is 52139758397. The next prime is 52139758459. The reversal of 52139758439 is 93485793125.

52139758439 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52139758439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52139758459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26069879219 + 26069879220.

It is an arithmetic number, because the mean of its divisors is an integer number (26069879220).

Almost surely, 2^52139758439 is an apocalyptic number.

52139758439 is a deficient number, since it is larger than the sum of its proper divisors (1).

52139758439 is an equidigital number, since it uses as much as digits as its factorization.

52139758439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8164800, while the sum is 56.

The spelling of 52139758439 in words is "fifty-two billion, one hundred thirty-nine million, seven hundred fifty-eight thousand, four hundred thirty-nine".