12117504740 has 96 divisors (see below), whose sum is σ = 28090782720. Its totient is φ = 4354214400.

The previous prime is 12117504709. The next prime is 12117504743. The reversal of 12117504740 is 4740571121.

It is a super-2 number, since 2×12117504740² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12117504697 and 12117504706.

It is not an unprimeable number, because it can be changed into a prime (12117504743) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6887981 + ... + 6889739.

It is an arithmetic number, because the mean of its divisors is an integer number (292612320).

Almost surely, 2^12117504740 is an apocalyptic number.

12117504740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12117504740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14045391360).

12117504740 is an abundant number, since it is smaller than the sum of its proper divisors (15973277980).

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

12117504740 is a wasteful number, since it uses less digits than its factorization.

12117504740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2133 (or 2131 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 32.

The spelling of 12117504740 in words is "twelve billion, one hundred seventeen million, five hundred four thousand, seven hundred forty".