12634403340 has 48 divisors (see below), whose sum is σ = 38097587808. Its totient is φ = 3110006784.

The previous prime is 12634403329. The next prime is 12634403377. The reversal of 12634403340 is 4330443621.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 12634403298 and 12634403307.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8098197 + ... + 8099756.

It is an arithmetic number, because the mean of its divisors is an integer number (793699746).

Almost surely, 2^12634403340 is an apocalyptic number.

12634403340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12634403340 is an abundant number, since it is smaller than the sum of its proper divisors (25463184468).

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

12634403340 is a wasteful number, since it uses less digits than its factorization.

12634403340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16197978 (or 16197976 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 30.

Adding to 12634403340 its reverse (4330443621), we get a palindrome (16964846961).

The spelling of 12634403340 in words is "twelve billion, six hundred thirty-four million, four hundred three thousand, three hundred forty".