12006561145 has 8 divisors (see below), whose sum is σ = 14610801600. Its totient is φ = 9469963440.

The previous prime is 12006561139. The next prime is 12006561169. The reversal of 12006561145 is 54116560021.

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

It is not a de Polignac number, because 12006561145 - 2¹⁹ = 12006036857 is a prime.

It is a super-2 number, since 2×12006561145² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16910295 + ... + 16911004.

It is an arithmetic number, because the mean of its divisors is an integer number (1826350200).

Almost surely, 2^12006561145 is an apocalyptic number.

It is an amenable number.

12006561145 is a deficient number, since it is larger than the sum of its proper divisors (2604240455).

12006561145 is an equidigital number, since it uses as much as digits as its factorization.

12006561145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33821375.

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

The spelling of 12006561145 in words is "twelve billion, six million, five hundred sixty-one thousand, one hundred forty-five".