51603867179 has 2 divisors, whose sum is σ = 51603867180. Its totient is φ = 51603867178.

The previous prime is 51603867167. The next prime is 51603867197. The reversal of 51603867179 is 97176830615.

Together with next prime (51603867197) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51603867179 - 2²⁸ = 51335431723 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51603867179.

It is not a weakly prime, because it can be changed into another prime (51603867199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25801933589 + 25801933590.

It is an arithmetic number, because the mean of its divisors is an integer number (25801933590).

Almost surely, 2^51603867179 is an apocalyptic number.

51603867179 is a deficient number, since it is larger than the sum of its proper divisors (1).

51603867179 is an equidigital number, since it uses as much as digits as its factorization.

51603867179 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1905120, while the sum is 53.

The spelling of 51603867179 in words is "fifty-one billion, six hundred three million, eight hundred sixty-seven thousand, one hundred seventy-nine".