50131049857 has 4 divisors (see below), whose sum is σ = 57292628416. Its totient is φ = 42969471300.

The previous prime is 50131049827. The next prime is 50131049863. The reversal of 50131049857 is 75894013105.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75894013105 = 5 ⋅15178802621.

It is not a de Polignac number, because 50131049857 - 2²³ = 50122661249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50131049827) 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, 3580789269 + ... + 3580789282.

It is an arithmetic number, because the mean of its divisors is an integer number (14323157104).

Almost surely, 2^50131049857 is an apocalyptic number.

It is an amenable number.

50131049857 is a deficient number, since it is larger than the sum of its proper divisors (7161578559).

50131049857 is an equidigital number, since it uses as much as digits as its factorization.

50131049857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7161578558.

The product of its (nonzero) digits is 151200, while the sum is 43.

The spelling of 50131049857 in words is "fifty billion, one hundred thirty-one million, forty-nine thousand, eight hundred fifty-seven".