51164916587 has 2 divisors, whose sum is σ = 51164916588. Its totient is φ = 51164916586.

The previous prime is 51164916563. The next prime is 51164916623. The reversal of 51164916587 is 78561946115.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51164916587 - 2¹⁴ = 51164900203 is a prime.

It is not a weakly prime, because it can be changed into another prime (51164916527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25582458293 + 25582458294.

It is an arithmetic number, because the mean of its divisors is an integer number (25582458294).

Almost surely, 2^51164916587 is an apocalyptic number.

51164916587 is a deficient number, since it is larger than the sum of its proper divisors (1).

51164916587 is an equidigital number, since it uses as much as digits as its factorization.

51164916587 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1814400, while the sum is 53.

The spelling of 51164916587 in words is "fifty-one billion, one hundred sixty-four million, nine hundred sixteen thousand, five hundred eighty-seven".