2187116699 has 4 divisors (see below), whose sum is σ = 2187380160. Its totient is φ = 2186853240.

The previous prime is 2187116677. The next prime is 2187116707. The reversal of 2187116699 is 9966117812.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2187116699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2187116629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118859 + ... + 136020.

It is an arithmetic number, because the mean of its divisors is an integer number (546845040).

Almost surely, 2^2187116699 is an apocalyptic number.

2187116699 is a deficient number, since it is larger than the sum of its proper divisors (263461).

2187116699 is an equidigital number, since it uses as much as digits as its factorization.

2187116699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263460.

The product of its digits is 326592, while the sum is 50.

The square root of 2187116699 is about 46766.6194951057. The cubic root of 2187116699 is about 1298.0477005317.

The spelling of 2187116699 in words is "two billion, one hundred eighty-seven million, one hundred sixteen thousand, six hundred ninety-nine".