52090781891 has 2 divisors, whose sum is σ = 52090781892. Its totient is φ = 52090781890.

The previous prime is 52090781857. The next prime is 52090781903. The reversal of 52090781891 is 19818709025.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 52090781891 - 2²⁶ = 52023673027 is a prime.

It is not a weakly prime, because it can be changed into another prime (52090781191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26045390945 + 26045390946.

It is an arithmetic number, because the mean of its divisors is an integer number (26045390946).

Almost surely, 2^52090781891 is an apocalyptic number.

52090781891 is a deficient number, since it is larger than the sum of its proper divisors (1).

52090781891 is an equidigital number, since it uses as much as digits as its factorization.

52090781891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 362880, while the sum is 50.

The spelling of 52090781891 in words is "fifty-two billion, ninety million, seven hundred eighty-one thousand, eight hundred ninety-one".