12547132565 has 8 divisors (see below), whose sum is σ = 16425337248. Its totient is φ = 9125187280.

The previous prime is 12547132561. The next prime is 12547132571. The reversal of 12547132565 is 56523174521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12547132565 - 2² = 12547132561 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12547132561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114064787 + ... + 114064896.

It is an arithmetic number, because the mean of its divisors is an integer number (2053167156).

Almost surely, 2^12547132565 is an apocalyptic number.

It is an amenable number.

12547132565 is a deficient number, since it is larger than the sum of its proper divisors (3878204683).

12547132565 is a wasteful number, since it uses less digits than its factorization.

12547132565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228129699.

The product of its digits is 252000, while the sum is 41.

The spelling of 12547132565 in words is "twelve billion, five hundred forty-seven million, one hundred thirty-two thousand, five hundred sixty-five".