12145892394509 has 8 divisors (see below), whose sum is σ = 12148940596320. Its totient is φ = 12142844448336.

The previous prime is 12145892394499. The next prime is 12145892394523. The reversal of 12145892394509 is 90549329854121.

12145892394509 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12145892394509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12145892394599) 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, 123922847 + ... + 124020819.

It is an arithmetic number, because the mean of its divisors is an integer number (1518617574540).

Almost surely, 2^{12145892394509} is an apocalyptic number.

It is an amenable number.

12145892394509 is a deficient number, since it is larger than the sum of its proper divisors (3048201811).

12145892394509 is an equidigital number, since it uses as much as digits as its factorization.

12145892394509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127819.

The product of its (nonzero) digits is 27993600, while the sum is 62.

The spelling of 12145892394509 in words is "twelve trillion, one hundred forty-five billion, eight hundred ninety-two million, three hundred ninety-four thousand, five hundred nine".