12599169791 has 16 divisors (see below), whose sum is σ = 13854742944. Its totient is φ = 11386842624.

The previous prime is 12599169733. The next prime is 12599169797. The reversal of 12599169791 is 19796199521.

It is a cyclic number.

It is not a de Polignac number, because 12599169791 - 2¹⁰ = 12599168767 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12599169791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12599169797) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81560 + ... + 178466.

It is an arithmetic number, because the mean of its divisors is an integer number (865921434).

Almost surely, 2^12599169791 is an apocalyptic number.

12599169791 is a deficient number, since it is larger than the sum of its proper divisors (1255573153).

12599169791 is a wasteful number, since it uses less digits than its factorization.

12599169791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97130.

The product of its digits is 2755620, while the sum is 59.

The spelling of 12599169791 in words is "twelve billion, five hundred ninety-nine million, one hundred sixty-nine thousand, seven hundred ninety-one".