12917827045 has 4 divisors (see below), whose sum is σ = 15501392460. Its totient is φ = 10334261632.

The previous prime is 12917827037. The next prime is 12917827049. The reversal of 12917827045 is 54072871921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54072871921 = 31 ⋅1744286191.

It can be written as a sum of positive squares in 2 ways, for example, as 3864114244 + 9053712801 = 62162^2 + 95151^2 .

It is a cyclic number.

It is not a de Polignac number, because 12917827045 - 2³ = 12917827037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12917826986 and 12917827004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12917827049) 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, 1291782700 + ... + 1291782709.

It is an arithmetic number, because the mean of its divisors is an integer number (3875348115).

Almost surely, 2^12917827045 is an apocalyptic number.

It is an amenable number.

12917827045 is a deficient number, since it is larger than the sum of its proper divisors (2583565415).

12917827045 is an equidigital number, since it uses as much as digits as its factorization.

12917827045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2583565414.

The product of its (nonzero) digits is 282240, while the sum is 46.

The spelling of 12917827045 in words is "twelve billion, nine hundred seventeen million, eight hundred twenty-seven thousand, forty-five".