50278778879 has 4 divisors (see below), whose sum is σ = 57461461584. Its totient is φ = 43096096176.

The previous prime is 50278778873. The next prime is 50278778903. The reversal of 50278778879 is 97887787205.

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

It is not a de Polignac number, because 50278778879 - 2⁴ = 50278778863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50278778873) 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, 3591341342 + ... + 3591341355.

It is an arithmetic number, because the mean of its divisors is an integer number (14365365396).

Almost surely, 2^50278778879 is an apocalyptic number.

50278778879 is a deficient number, since it is larger than the sum of its proper divisors (7182682705).

50278778879 is an equidigital number, since it uses as much as digits as its factorization.

50278778879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7182682704.

The product of its (nonzero) digits is 110638080, while the sum is 68.

The spelling of 50278778879 in words is "fifty billion, two hundred seventy-eight million, seven hundred seventy-eight thousand, eight hundred seventy-nine".