50149779123 has 4 divisors (see below), whose sum is σ = 66866372168. Its totient is φ = 33433186080.

The previous prime is 50149779101. The next prime is 50149779133. The reversal of 50149779123 is 32197794105.

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

It is not a de Polignac number, because 50149779123 - 2¹⁴ = 50149762739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50149779133) 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, 8358296518 + ... + 8358296523.

It is an arithmetic number, because the mean of its divisors is an integer number (16716593042).

Almost surely, 2^50149779123 is an apocalyptic number.

50149779123 is a deficient number, since it is larger than the sum of its proper divisors (16716593045).

50149779123 is a wasteful number, since it uses less digits than its factorization.

50149779123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16716593044.

The product of its (nonzero) digits is 476280, while the sum is 48.

The spelling of 50149779123 in words is "fifty billion, one hundred forty-nine million, seven hundred seventy-nine thousand, one hundred twenty-three".