16164665799 has 4 divisors (see below), whose sum is σ = 21552887736. Its totient is φ = 10776443864.

The previous prime is 16164665789. The next prime is 16164665831. The reversal of 16164665799 is 99756646161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99756646161 = 3 ⋅33252215387.

It is a cyclic number.

It is not a de Polignac number, because 16164665799 - 2¹¹ = 16164663751 is a prime.

It is a super-2 number, since 2×16164665799² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16164665749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2694110964 + ... + 2694110969.

It is an arithmetic number, because the mean of its divisors is an integer number (5388221934).

Almost surely, 2^16164665799 is an apocalyptic number.

16164665799 is a deficient number, since it is larger than the sum of its proper divisors (5388221937).

16164665799 is an equidigital number, since it uses as much as digits as its factorization.

16164665799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5388221936.

The product of its digits is 14696640, while the sum is 60.

The spelling of 16164665799 in words is "sixteen billion, one hundred sixty-four million, six hundred sixty-five thousand, seven hundred ninety-nine".