12173547399 has 16 divisors (see below), whose sum is σ = 18399964800. Its totient is φ = 7097128416.

The previous prime is 12173547367. The next prime is 12173547403. The reversal of 12173547399 is 99374537121.

It is not a de Polignac number, because 12173547399 - 2⁵ = 12173547367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12173547599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8213529 + ... + 8215010.

It is an arithmetic number, because the mean of its divisors is an integer number (1149997800).

Almost surely, 2^12173547399 is an apocalyptic number.

12173547399 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

12173547399 is a deficient number, since it is larger than the sum of its proper divisors (6226417401).

12173547399 is a wasteful number, since it uses less digits than its factorization.

12173547399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16428574.

The product of its digits is 1428840, while the sum is 51.

The spelling of 12173547399 in words is "twelve billion, one hundred seventy-three million, five hundred forty-seven thousand, three hundred ninety-nine".