51165082889 has 2 divisors, whose sum is σ = 51165082890. Its totient is φ = 51165082888.

The previous prime is 51165082873. The next prime is 51165082909. The reversal of 51165082889 is 98828056115.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30316033225 + 20849049664 = 174115^2 + 144392^2 .

It is a cyclic number.

It is not a de Polignac number, because 51165082889 - 2⁴ = 51165082873 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51165082889.

It is not a weakly prime, because it can be changed into another prime (51165082489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25582541444 + 25582541445.

It is an arithmetic number, because the mean of its divisors is an integer number (25582541445).

Almost surely, 2^51165082889 is an apocalyptic number.

It is an amenable number.

51165082889 is a deficient number, since it is larger than the sum of its proper divisors (1).

51165082889 is an equidigital number, since it uses as much as digits as its factorization.

51165082889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1382400, while the sum is 53.

The spelling of 51165082889 in words is "fifty-one billion, one hundred sixty-five million, eighty-two thousand, eight hundred eighty-nine".