12001665145 has 8 divisors (see below), whose sum is σ = 14402606400. Its totient is φ = 9600926640.

The previous prime is 12001665133. The next prime is 12001665187. The reversal of 12001665145 is 54156610021.

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

It is not a de Polignac number, because 12001665145 - 2¹⁷ = 12001534073 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156660 + ... + 220330.

It is an arithmetic number, because the mean of its divisors is an integer number (1800325800).

Almost surely, 2^12001665145 is an apocalyptic number.

It is an amenable number.

12001665145 is a deficient number, since it is larger than the sum of its proper divisors (2400941255).

12001665145 is an equidigital number, since it uses as much as digits as its factorization.

12001665145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101375.

The product of its (nonzero) digits is 7200, while the sum is 31.

The spelling of 12001665145 in words is "twelve billion, one million, six hundred sixty-five thousand, one hundred forty-five".