51196000109 has 2 divisors, whose sum is σ = 51196000110. Its totient is φ = 51196000108.

The previous prime is 51196000069. The next prime is 51196000111. The reversal of 51196000109 is 90100069115.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42899522884 + 8296477225 = 207122^2 + 91085^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51196000109 is a prime.

Together with 51196000111, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51196000139) 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, 25598000054 + 25598000055.

It is an arithmetic number, because the mean of its divisors is an integer number (25598000055).

Almost surely, 2^51196000109 is an apocalyptic number.

It is an amenable number.

51196000109 is a deficient number, since it is larger than the sum of its proper divisors (1).

51196000109 is an equidigital number, since it uses as much as digits as its factorization.

51196000109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2430, while the sum is 32.

The spelling of 51196000109 in words is "fifty-one billion, one hundred ninety-six million, one hundred nine", and thus it is an aban number.