12647941745 has 8 divisors (see below), whose sum is σ = 15348064680. Its totient is φ = 10004663680.

The previous prime is 12647941723. The next prime is 12647941759. The reversal of 12647941745 is 54714974621.

It can be written as a sum of positive squares in 4 ways, for example, as 15376 + 12647926369 = 124^2 + 112463^2 .

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

It is not a de Polignac number, because 12647941745 - 2⁶ = 12647941681 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12647941693 and 12647941702.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14210726 + ... + 14211615.

It is an arithmetic number, because the mean of its divisors is an integer number (1918508085).

Almost surely, 2^12647941745 is an apocalyptic number.

It is an amenable number.

12647941745 is a deficient number, since it is larger than the sum of its proper divisors (2700122935).

12647941745 is an equidigital number, since it uses as much as digits as its factorization.

12647941745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28422435.

The product of its digits is 1693440, while the sum is 50.

The spelling of 12647941745 in words is "twelve billion, six hundred forty-seven million, nine hundred forty-one thousand, seven hundred forty-five".