12117747240 has 96 divisors (see below), whose sum is σ = 39396258720. Its totient is φ = 3230285184.

The previous prime is 12117747209. The next prime is 12117747277. The reversal of 12117747240 is 4274771121.

It is a happy number.

12117747240 is a `hidden beast` number, since 12 + 1 + 177 + 472 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 12117747195 and 12117747204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2042919 + ... + 2048841.

It is an arithmetic number, because the mean of its divisors is an integer number (410377695).

Almost surely, 2^12117747240 is an apocalyptic number.

12117747240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12117747240 is an abundant number, since it is smaller than the sum of its proper divisors (27278511480).

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

12117747240 is a wasteful number, since it uses less digits than its factorization.

12117747240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11623 (or 11616 counting only the distinct ones).

The product of its (nonzero) digits is 21952, while the sum is 36.

The spelling of 12117747240 in words is "twelve billion, one hundred seventeen million, seven hundred forty-seven thousand, two hundred forty".