12634780040 has 32 divisors (see below), whose sum is σ = 28616535360. Its totient is φ = 5020440000.

The previous prime is 12634780033. The next prime is 12634780051. The reversal of 12634780040 is 4008743621.

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, 1039886 + ... + 1051965.

It is an arithmetic number, because the mean of its divisors is an integer number (894266730).

Almost surely, 2^12634780040 is an apocalyptic number.

12634780040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12634780040 is an abundant number, since it is smaller than the sum of its proper divisors (15981755320).

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

12634780040 is a wasteful number, since it uses less digits than its factorization.

12634780040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2092013 (or 2092009 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 35.

The spelling of 12634780040 in words is "twelve billion, six hundred thirty-four million, seven hundred eighty thousand, forty".