12547223434 has 16 divisors (see below), whose sum is σ = 18888005376. Its totient is φ = 6251256000.

The previous prime is 12547223413. The next prime is 12547223449. The reversal of 12547223434 is 43432274521.

It is a junction number, because it is equal to n+sod(n) for n = 12547223393 and 12547223402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 786889 + ... + 802675.

It is an arithmetic number, because the mean of its divisors is an integer number (1180500336).

Almost surely, 2^12547223434 is an apocalyptic number.

12547223434 is a deficient number, since it is larger than the sum of its proper divisors (6340781942).

12547223434 is a wasteful number, since it uses less digits than its factorization.

12547223434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17181.

The product of its digits is 161280, while the sum is 37.

Adding to 12547223434 its reverse (43432274521), we get a palindrome (55979497955).

The spelling of 12547223434 in words is "twelve billion, five hundred forty-seven million, two hundred twenty-three thousand, four hundred thirty-four".