50442513239 has 2 divisors, whose sum is σ = 50442513240. Its totient is φ = 50442513238.

The previous prime is 50442513221. The next prime is 50442513269. The reversal of 50442513239 is 93231524405.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50442513239 is a prime.

It is a super-2 number, since 2×50442513239² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50442513269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25221256619 + 25221256620.

It is an arithmetic number, because the mean of its divisors is an integer number (25221256620).

Almost surely, 2^50442513239 is an apocalyptic number.

50442513239 is a deficient number, since it is larger than the sum of its proper divisors (1).

50442513239 is an equidigital number, since it uses as much as digits as its factorization.

50442513239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129600, while the sum is 38.

The spelling of 50442513239 in words is "fifty billion, four hundred forty-two million, five hundred thirteen thousand, two hundred thirty-nine".