12547143272 has 16 divisors (see below), whose sum is σ = 23531620740. Its totient is φ = 6272044416.

The previous prime is 12547143251. The next prime is 12547143313. The reversal of 12547143272 is 27234174521.

It can be written as a sum of positive squares in 2 ways, for example, as 10177984996 + 2369158276 = 100886^2 + 48674^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155603 + ... + 222050.

Almost surely, 2^12547143272 is an apocalyptic number.

It is an amenable number.

12547143272 is a deficient number, since it is larger than the sum of its proper divisors (10984477468).

12547143272 is a wasteful number, since it uses less digits than its factorization.

12547143272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381812 (or 381808 counting only the distinct ones).

The product of its digits is 94080, while the sum is 38.

The spelling of 12547143272 in words is "twelve billion, five hundred forty-seven million, one hundred forty-three thousand, two hundred seventy-two".