12061445917 has 4 divisors (see below), whose sum is σ = 12696258880. Its totient is φ = 11426632956.

The previous prime is 12061445839. The next prime is 12061445947. The reversal of 12061445917 is 71954416021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12061445917 - 2¹⁹ = 12060921629 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12061445917.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12061445947) 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, 317406453 + ... + 317406490.

It is an arithmetic number, because the mean of its divisors is an integer number (3174064720).

Almost surely, 2^12061445917 is an apocalyptic number.

It is an amenable number.

12061445917 is a deficient number, since it is larger than the sum of its proper divisors (634812963).

12061445917 is an equidigital number, since it uses as much as digits as its factorization.

12061445917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634812962.

The product of its (nonzero) digits is 60480, while the sum is 40.

The spelling of 12061445917 in words is "twelve billion, sixty-one million, four hundred forty-five thousand, nine hundred seventeen".