51051051049 has 2 divisors, whose sum is σ = 51051051050. Its totient is φ = 51051051048.

The previous prime is 51051051047. The next prime is 51051051083. The reversal of 51051051049 is 94015015015.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30525331225 + 20525719824 = 174715^2 + 143268^2 .

It is a cyclic number.

It is not a de Polignac number, because 51051051049 - 2¹ = 51051051047 is a prime.

Together with 51051051047, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 51051051049.

It is not a weakly prime, because it can be changed into another prime (51051051043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25525525524 + 25525525525.

It is an arithmetic number, because the mean of its divisors is an integer number (25525525525).

Almost surely, 2^51051051049 is an apocalyptic number.

It is an amenable number.

51051051049 is a deficient number, since it is larger than the sum of its proper divisors (1).

51051051049 is an equidigital number, since it uses as much as digits as its factorization.

51051051049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4500, while the sum is 31.

The spelling of 51051051049 in words is "fifty-one billion, fifty-one million, fifty-one thousand, forty-nine".