51467078189 has 2 divisors, whose sum is σ = 51467078190. Its totient is φ = 51467078188.

The previous prime is 51467078177. The next prime is 51467078209. The reversal of 51467078189 is 98187076415.

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., 37294175689 + 14172902500 = 193117^2 + 119050^2 .

It is a cyclic number.

It is not a de Polignac number, because 51467078189 - 2²⁰ = 51466029613 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51467278189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25733539094 + 25733539095.

It is an arithmetic number, because the mean of its divisors is an integer number (25733539095).

Almost surely, 2^51467078189 is an apocalyptic number.

It is an amenable number.

51467078189 is a deficient number, since it is larger than the sum of its proper divisors (1).

51467078189 is an equidigital number, since it uses as much as digits as its factorization.

51467078189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3386880, while the sum is 56.

The spelling of 51467078189 in words is "fifty-one billion, four hundred sixty-seven million, seventy-eight thousand, one hundred eighty-nine".