50939442751 has 4 divisors (see below), whose sum is σ = 51027726592. Its totient is φ = 50851158912.

The previous prime is 50939442689. The next prime is 50939442769. The reversal of 50939442751 is 15724493905.

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

It is a cyclic number.

It is not a de Polignac number, because 50939442751 - 2¹⁷ = 50939311679 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 50939442695 and 50939442704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50939442781) 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, 44141055 + ... + 44142208.

It is an arithmetic number, because the mean of its divisors is an integer number (12756931648).

Almost surely, 2^50939442751 is an apocalyptic number.

50939442751 is a deficient number, since it is larger than the sum of its proper divisors (88283841).

50939442751 is an equidigital number, since it uses as much as digits as its factorization.

50939442751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88283840.

The product of its (nonzero) digits is 1360800, while the sum is 49.

The spelling of 50939442751 in words is "fifty billion, nine hundred thirty-nine million, four hundred forty-two thousand, seven hundred fifty-one".