12634184540 has 24 divisors (see below), whose sum is σ = 27387652992. Its totient is φ = 4890651840.

The previous prime is 12634184477. The next prime is 12634184543. The reversal of 12634184540 is 4548143621.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12634184494 and 12634184503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12634184543) 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, 10188239 + ... + 10189478.

It is an arithmetic number, because the mean of its divisors is an integer number (1141152208).

Almost surely, 2^12634184540 is an apocalyptic number.

12634184540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12634184540 is an abundant number, since it is smaller than the sum of its proper divisors (14753468452).

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

12634184540 is a wasteful number, since it uses less digits than its factorization.

12634184540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20377757 (or 20377755 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 38.

The spelling of 12634184540 in words is "twelve billion, six hundred thirty-four million, one hundred eighty-four thousand, five hundred forty".