50851092109 has 2 divisors, whose sum is σ = 50851092110. Its totient is φ = 50851092108.

The previous prime is 50851092107. The next prime is 50851092137. The reversal of 50851092109 is 90129015805.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26059644900 + 24791447209 = 161430^2 + 157453^2 .

It is a cyclic number.

It is not a de Polignac number, because 50851092109 - 2¹ = 50851092107 is a prime.

Together with 50851092107, 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 (50851092101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25425546054 + 25425546055.

It is an arithmetic number, because the mean of its divisors is an integer number (25425546055).

Almost surely, 2^50851092109 is an apocalyptic number.

It is an amenable number.

50851092109 is a deficient number, since it is larger than the sum of its proper divisors (1).

50851092109 is an equidigital number, since it uses as much as digits as its factorization.

50851092109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400, while the sum is 40.

The spelling of 50851092109 in words is "fifty billion, eight hundred fifty-one million, ninety-two thousand, one hundred nine".