13172455843 has 4 divisors (see below), whose sum is σ = 13174368768. Its totient is φ = 13170542920.

The previous prime is 13172455811. The next prime is 13172455853. The reversal of 13172455843 is 34855427131.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 13172455843 - 2⁵ = 13172455811 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 13172455843.

It is not an unprimeable number, because it can be changed into a prime (13172455853) 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, 946096 + ... + 959917.

It is an arithmetic number, because the mean of its divisors is an integer number (3293592192).

Almost surely, 2^13172455843 is an apocalyptic number.

13172455843 is a deficient number, since it is larger than the sum of its proper divisors (1912925).

13172455843 is an equidigital number, since it uses as much as digits as its factorization.

13172455843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1912924.

The product of its digits is 403200, while the sum is 43.

The spelling of 13172455843 in words is "thirteen billion, one hundred seventy-two million, four hundred fifty-five thousand, eight hundred forty-three".