50904821761 has 2 divisors, whose sum is σ = 50904821762. Its totient is φ = 50904821760.

The previous prime is 50904821731. The next prime is 50904821797. The reversal of 50904821761 is 16712840905.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50791186161 + 113635600 = 225369^2 + 10660^2 .

It is a cyclic number.

It is not a de Polignac number, because 50904821761 - 2⁹ = 50904821249 is a prime.

It is a super-2 number, since 2×50904821761² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (50904821731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25452410880 + 25452410881.

It is an arithmetic number, because the mean of its divisors is an integer number (25452410881).

Almost surely, 2^50904821761 is an apocalyptic number.

It is an amenable number.

50904821761 is a deficient number, since it is larger than the sum of its proper divisors (1).

50904821761 is an equidigital number, since it uses as much as digits as its factorization.

50904821761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 43.

The spelling of 50904821761 in words is "fifty billion, nine hundred four million, eight hundred twenty-one thousand, seven hundred sixty-one".