50344773781 has 2 divisors, whose sum is σ = 50344773782. Its totient is φ = 50344773780.

The previous prime is 50344773779. The next prime is 50344773797. The reversal of 50344773781 is 18737744305.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49847706756 + 497067025 = 223266^2 + 22295^2 .

It is a cyclic number.

It is not a de Polignac number, because 50344773781 - 2¹ = 50344773779 is a prime.

It is a super-2 number, since 2×50344773781² (a number of 22 digits) contains 22 as substring.

Together with 50344773779, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (50344771781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25172386890 + 25172386891.

It is an arithmetic number, because the mean of its divisors is an integer number (25172386891).

Almost surely, 2^50344773781 is an apocalyptic number.

It is an amenable number.

50344773781 is a deficient number, since it is larger than the sum of its proper divisors (1).

50344773781 is an equidigital number, since it uses as much as digits as its factorization.

50344773781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1975680, while the sum is 49.

The spelling of 50344773781 in words is "fifty billion, three hundred forty-four million, seven hundred seventy-three thousand, seven hundred eighty-one".