50235682781 has 4 divisors (see below), whose sum is σ = 50238181500. Its totient is φ = 50233184064.

The previous prime is 50235682751. The next prime is 50235682787. The reversal of 50235682781 is 18728653205.

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

It can be written as a sum of positive squares in 2 ways, for example, as 25576005625 + 24659677156 = 159925^2 + 157034^2 .

It is a cyclic number.

It is not a de Polignac number, because 50235682781 - 2²² = 50231488477 is a prime.

It is a super-2 number, since 2×50235682781² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50235682787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1218956 + ... + 1259493.

It is an arithmetic number, because the mean of its divisors is an integer number (12559545375).

Almost surely, 2^50235682781 is an apocalyptic number.

It is an amenable number.

50235682781 is a deficient number, since it is larger than the sum of its proper divisors (2498719).

50235682781 is a wasteful number, since it uses less digits than its factorization.

50235682781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2498718.

The product of its (nonzero) digits is 806400, while the sum is 47.

The spelling of 50235682781 in words is "fifty billion, two hundred thirty-five million, six hundred eighty-two thousand, seven hundred eighty-one".