13171224644 has 12 divisors (see below), whose sum is σ = 23068653804. Its totient is φ = 6580180704.

The previous prime is 13171224641. The next prime is 13171224709. The reversal of 13171224644 is 44642217131.

It can be written as a sum of positive squares in 2 ways, for example, as 1483020100 + 11688204544 = 38510^2 + 108112^2 .

It is not an unprimeable number, because it can be changed into a prime (13171224641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1352447 + ... + 1362150.

It is an arithmetic number, because the mean of its divisors is an integer number (1922387817).

Almost surely, 2^13171224644 is an apocalyptic number.

It is an amenable number.

13171224644 is a deficient number, since it is larger than the sum of its proper divisors (9897429160).

13171224644 is a wasteful number, since it uses less digits than its factorization.

13171224644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2715814 (or 2715812 counting only the distinct ones).

The product of its digits is 32256, while the sum is 35.

The spelling of 13171224644 in words is "thirteen billion, one hundred seventy-one million, two hundred twenty-four thousand, six hundred forty-four".