12547248900649 has 4 divisors (see below), whose sum is σ = 12814211643264. Its totient is φ = 12280286158036.

The previous prime is 12547248900607. The next prime is 12547248900707. The reversal of 12547248900649 is 94600984274521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12547248900649 - 2¹³ = 12547248892457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12547248903649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133481371237 + ... + 133481371330.

It is an arithmetic number, because the mean of its divisors is an integer number (3203552910816).

Almost surely, 2^{12547248900649} is an apocalyptic number.

It is an amenable number.

12547248900649 is a deficient number, since it is larger than the sum of its proper divisors (266962742615).

12547248900649 is an equidigital number, since it uses as much as digits as its factorization.

12547248900649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266962742614.

The product of its (nonzero) digits is 34836480, while the sum is 61.

The spelling of 12547248900649 in words is "twelve trillion, five hundred forty-seven billion, two hundred forty-eight million, nine hundred thousand, six hundred forty-nine".