12635560545 has 8 divisors (see below), whose sum is σ = 20216896896. Its totient is φ = 6738965616.

The previous prime is 12635560499. The next prime is 12635560549. The reversal of 12635560545 is 54506553621.

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

It is not a de Polignac number, because 12635560545 - 2¹² = 12635556449 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 12635560497 and 12635560506.

It is not an unprimeable number, because it can be changed into a prime (12635560549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 421185337 + ... + 421185366.

It is an arithmetic number, because the mean of its divisors is an integer number (2527112112).

Almost surely, 2^12635560545 is an apocalyptic number.

12635560545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12635560545 is a deficient number, since it is larger than the sum of its proper divisors (7581336351).

12635560545 is an equidigital number, since it uses as much as digits as its factorization.

12635560545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842370711.

The product of its (nonzero) digits is 540000, while the sum is 42.

The spelling of 12635560545 in words is "twelve billion, six hundred thirty-five million, five hundred sixty thousand, five hundred forty-five".