7166599399 has 2 divisors, whose sum is σ = 7166599400. Its totient is φ = 7166599398.

The previous prime is 7166599397. The next prime is 7166599501. The reversal of 7166599399 is 9939956617.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7166599399 - 2¹ = 7166599397 is a prime.

It is a super-2 number, since 2×7166599399² (a number of 21 digits) contains 22 as substring.

Together with 7166599397, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 7166599399.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7166599397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3583299699 + 3583299700.

It is an arithmetic number, because the mean of its divisors is an integer number (3583299700).

Almost surely, 2^7166599399 is an apocalyptic number.

7166599399 is a deficient number, since it is larger than the sum of its proper divisors (1).

7166599399 is an equidigital number, since it uses as much as digits as its factorization.

7166599399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24800580, while the sum is 64.

The square root of 7166599399 is about 84655.7700278014. The cubic root of 7166599399 is about 1927.9882210295.

The spelling of 7166599399 in words is "seven billion, one hundred sixty-six million, five hundred ninety-nine thousand, three hundred ninety-nine".