12173547397 has 8 divisors (see below), whose sum is σ = 13404349152. Its totient is φ = 10963431600.

The previous prime is 12173547367. The next prime is 12173547403. The reversal of 12173547397 is 79374537121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12173547397 - 2²⁷ = 12039329669 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 12173547397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12173547367) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5170254 + ... + 5172607.

It is an arithmetic number, because the mean of its divisors is an integer number (1675543644).

Almost surely, 2^12173547397 is an apocalyptic number.

It is an amenable number.

12173547397 is a deficient number, since it is larger than the sum of its proper divisors (1230801755).

12173547397 is a wasteful number, since it uses less digits than its factorization.

12173547397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10342979.

The product of its digits is 1111320, while the sum is 49.

The spelling of 12173547397 in words is "twelve billion, one hundred seventy-three million, five hundred forty-seven thousand, three hundred ninety-seven".