13172470844 has 36 divisors (see below), whose sum is σ = 25138527624. Its totient is φ = 6002915616.

The previous prime is 13172470837. The next prime is 13172470849. The reversal of 13172470844 is 44807427131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13172470849) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7539179 + ... + 7540925.

It is an arithmetic number, because the mean of its divisors is an integer number (698292434).

Almost surely, 2^13172470844 is an apocalyptic number.

It is an amenable number.

13172470844 is a deficient number, since it is larger than the sum of its proper divisors (11966056780).

13172470844 is an equidigital number, since it uses as much as digits as its factorization.

13172470844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3594 (or 1845 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 41.

Adding to 13172470844 its reverse (44807427131), we get a palindrome (57979897975).

The spelling of 13172470844 in words is "thirteen billion, one hundred seventy-two million, four hundred seventy thousand, eight hundred forty-four".