12347443545 has 16 divisors (see below), whose sum is σ = 19855190400. Its totient is φ = 6552209664.

The previous prime is 12347443529. The next prime is 12347443547. The reversal of 12347443545 is 54534474321.

It is not a de Polignac number, because 12347443545 - 2⁴ = 12347443529 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12347443497 and 12347443506.

It is not an unprimeable number, because it can be changed into a prime (12347443547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2065264 + ... + 2071233.

It is an arithmetic number, because the mean of its divisors is an integer number (1240949400).

Almost surely, 2^12347443545 is an apocalyptic number.

12347443545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12347443545 is a deficient number, since it is larger than the sum of its proper divisors (7507746855).

12347443545 is a wasteful number, since it uses less digits than its factorization.

12347443545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4136704.

The product of its digits is 806400, while the sum is 42.

The spelling of 12347443545 in words is "twelve billion, three hundred forty-seven million, four hundred forty-three thousand, five hundred forty-five".