50849497139 has 4 divisors (see below), whose sum is σ = 58113711024. Its totient is φ = 43585283256.

The previous prime is 50849497133. The next prime is 50849497163. The reversal of 50849497139 is 93179494805.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-50849497139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50849497133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3632106932 + ... + 3632106945.

It is an arithmetic number, because the mean of its divisors is an integer number (14528427756).

Almost surely, 2^50849497139 is an apocalyptic number.

50849497139 is a deficient number, since it is larger than the sum of its proper divisors (7264213885).

50849497139 is an equidigital number, since it uses as much as digits as its factorization.

50849497139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7264213884.

The product of its (nonzero) digits is 9797760, while the sum is 59.

The spelling of 50849497139 in words is "fifty billion, eight hundred forty-nine million, four hundred ninety-seven thousand, one hundred thirty-nine".