12638303810 has 32 divisors (see below), whose sum is σ = 25896039552. Its totient is φ = 4395930880.

The previous prime is 12638303803. The next prime is 12638303813. The reversal of 12638303810 is 1830383621.

It is a super-2 number, since 2×12638303810² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12638303813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2495159 + ... + 2500218.

It is an arithmetic number, because the mean of its divisors is an integer number (809251236).

Almost surely, 2^12638303810 is an apocalyptic number.

12638303810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12638303810 is an abundant number, since it is smaller than the sum of its proper divisors (13257735742).

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

12638303810 is a wasteful number, since it uses less digits than its factorization.

12638303810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4995418.

The product of its (nonzero) digits is 20736, while the sum is 35.

The spelling of 12638303810 in words is "twelve billion, six hundred thirty-eight million, three hundred three thousand, eight hundred ten".