51166787927599 has 2 divisors, whose sum is σ = 51166787927600. Its totient is φ = 51166787927598.

The previous prime is 51166787927561. The next prime is 51166787927603. The reversal of 51166787927599 is 99572978766115.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51166787927599 - 2³¹ = 51164640443951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51166787927999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25583393963799 + 25583393963800.

It is an arithmetic number, because the mean of its divisors is an integer number (25583393963800).

Almost surely, 2^{51166787927599} is an apocalyptic number.

51166787927599 is a deficient number, since it is larger than the sum of its proper divisors (1).

51166787927599 is an equidigital number, since it uses as much as digits as its factorization.

51166787927599 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3600676800, while the sum is 82.

The spelling of 51166787927599 in words is "fifty-one trillion, one hundred sixty-six billion, seven hundred eighty-seven million, nine hundred twenty-seven thousand, five hundred ninety-nine".