12145547516794 has 8 divisors (see below), whose sum is σ = 18218349174420. Its totient is φ = 6072764458656.

The previous prime is 12145547516779. The next prime is 12145547516813. The reversal of 12145547516794 is 49761574554121.

It can be written as a sum of positive squares in 2 ways, for example, as 8540626329225 + 3604921187569 = 2922435^2 + 1898663^2 .

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

It is a super-3 number, since 3×12145547516794³ (a number of 40 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2883099 + ... + 5709934.

Almost surely, 2^{12145547516794} is an apocalyptic number.

12145547516794 is a deficient number, since it is larger than the sum of its proper divisors (6072801657626).

12145547516794 is an equidigital number, since it uses as much as digits as its factorization.

12145547516794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9299744.

The product of its digits is 42336000, while the sum is 61.

The spelling of 12145547516794 in words is "twelve trillion, one hundred forty-five billion, five hundred forty-seven million, five hundred sixteen thousand, seven hundred ninety-four".