50015550139 has 2 divisors, whose sum is σ = 50015550140. Its totient is φ = 50015550138.

The previous prime is 50015550047. The next prime is 50015550149. The reversal of 50015550139 is 93105551005.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 50015550139 - 2²⁷ = 49881332411 is a prime.

It is not a weakly prime, because it can be changed into another prime (50015550149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25007775069 + 25007775070.

It is an arithmetic number, because the mean of its divisors is an integer number (25007775070).

Almost surely, 2^50015550139 is an apocalyptic number.

50015550139 is a deficient number, since it is larger than the sum of its proper divisors (1).

50015550139 is an equidigital number, since it uses as much as digits as its factorization.

50015550139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16875, while the sum is 34.

The spelling of 50015550139 in words is "fifty billion, fifteen million, five hundred fifty thousand, one hundred thirty-nine".