12117925718 has 8 divisors (see below), whose sum is σ = 18599607048. Its totient is φ = 5918056704.

The previous prime is 12117925717. The next prime is 12117925723. The reversal of 12117925718 is 81752971121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12117925717) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70452971 + ... + 70453142.

It is an arithmetic number, because the mean of its divisors is an integer number (2324950881).

Almost surely, 2^12117925718 is an apocalyptic number.

12117925718 is a deficient number, since it is larger than the sum of its proper divisors (6481681330).

12117925718 is a wasteful number, since it uses less digits than its factorization.

12117925718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140906158.

The product of its digits is 70560, while the sum is 44.

The spelling of 12117925718 in words is "twelve billion, one hundred seventeen million, nine hundred twenty-five thousand, seven hundred eighteen".