50809726819 has 2 divisors, whose sum is σ = 50809726820. Its totient is φ = 50809726818.

The previous prime is 50809726813. The next prime is 50809726843. The reversal of 50809726819 is 91862790805.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 50809726819 - 2⁷ = 50809726691 is a prime.

It is a super-2 number, since 2×50809726819² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 50809726819.

It is not a weakly prime, because it can be changed into another prime (50809726813) 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 as a sum of consecutive naturals, namely, 25404863409 + 25404863410.

It is an arithmetic number, because the mean of its divisors is an integer number (25404863410).

Almost surely, 2^50809726819 is an apocalyptic number.

50809726819 is a deficient number, since it is larger than the sum of its proper divisors (1).

50809726819 is an equidigital number, since it uses as much as digits as its factorization.

50809726819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2177280, while the sum is 55.

The spelling of 50809726819 in words is "fifty billion, eight hundred nine million, seven hundred twenty-six thousand, eight hundred nineteen".