12663749850 has 48 divisors (see below), whose sum is σ = 33059059680. Its totient is φ = 3199262400.

The previous prime is 12663749807. The next prime is 12663749863. The reversal of 12663749850 is 5894736621.

It is a junction number, because it is equal to n+sod(n) for n = 12663749793 and 12663749802.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2218861 + ... + 2224560.

It is an arithmetic number, because the mean of its divisors is an integer number (688730410).

It is a 1-persistent number, because it is pandigital, but 2⋅12663749850 = 25327499700 is not.

Almost surely, 2^12663749850 is an apocalyptic number.

12663749850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12663749850 is an abundant number, since it is smaller than the sum of its proper divisors (20395309830).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12663749850 is a wasteful number, since it uses less digits than its factorization.

12663749850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4443455 (or 4443450 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 51.

The spelling of 12663749850 in words is "twelve billion, six hundred sixty-three million, seven hundred forty-nine thousand, eight hundred fifty".