12071518009 has 8 divisors (see below), whose sum is σ = 12210521760. Its totient is φ = 11933078976.

The previous prime is 12071517949. The next prime is 12071518057. The reversal of 12071518009 is 90081517021.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 12071518009 - 2²⁷ = 11937300281 is a prime.

It is a super-2 number, since 2×12071518009² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12071518309) 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, 98107 + ... + 183760.

It is an arithmetic number, because the mean of its divisors is an integer number (1526315220).

Almost surely, 2^12071518009 is an apocalyptic number.

It is an amenable number.

12071518009 is a deficient number, since it is larger than the sum of its proper divisors (139003751).

12071518009 is a wasteful number, since it uses less digits than its factorization.

12071518009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282359.

The product of its (nonzero) digits is 5040, while the sum is 34.

The spelling of 12071518009 in words is "twelve billion, seventy-one million, five hundred eighteen thousand, nine".