12016649165399 has 4 divisors (see below), whose sum is σ = 12096229623600. Its totient is φ = 11937068707200.

The previous prime is 12016649165357. The next prime is 12016649165441. The reversal of 12016649165399 is 99356194661021.

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

It is an interprime number because it is at equal distance from previous prime (12016649165357) and next prime (12016649165441).

It is a cyclic number.

It is not a de Polignac number, because 12016649165399 - 2²⁸ = 12016380729943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12016649165329) 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, 39790228874 + ... + 39790229175.

It is an arithmetic number, because the mean of its divisors is an integer number (3024057405900).

Almost surely, 2^{12016649165399} is an apocalyptic number.

12016649165399 is a deficient number, since it is larger than the sum of its proper divisors (79580458201).

12016649165399 is an equidigital number, since it uses as much as digits as its factorization.

12016649165399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79580458200.

The product of its (nonzero) digits is 18895680, while the sum is 62.

The spelling of 12016649165399 in words is "twelve trillion, sixteen billion, six hundred forty-nine million, one hundred sixty-five thousand, three hundred ninety-nine".