50773844981 has 4 divisors (see below), whose sum is σ = 51036922092. Its totient is φ = 50510767872.

The previous prime is 50773844969. The next prime is 50773845007. The reversal of 50773844981 is 18944837705.

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 30824824900 + 19949020081 = 175570^2 + 141241^2 .

It is a cyclic number.

It is not a de Polignac number, because 50773844981 - 2⁶ = 50773844917 is a prime.

It is a super-2 number, since 2×50773844981² (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 (50773844911) 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, 131538266 + ... + 131538651.

It is an arithmetic number, because the mean of its divisors is an integer number (12759230523).

Almost surely, 2^50773844981 is an apocalyptic number.

It is an amenable number.

50773844981 is a deficient number, since it is larger than the sum of its proper divisors (263077111).

50773844981 is a wasteful number, since it uses less digits than its factorization.

50773844981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263077110.

The product of its (nonzero) digits is 6773760, while the sum is 56.

The spelling of 50773844981 in words is "fifty billion, seven hundred seventy-three million, eight hundred forty-four thousand, nine hundred eighty-one".