12145555394 has 8 divisors (see below), whose sum is σ = 20820952128. Its totient is φ = 5205238020.

The previous prime is 12145555391. The next prime is 12145555399. The reversal of 12145555394 is 49355554121.

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

It is not an unprimeable number, because it can be changed into a prime (12145555391) 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, 433769822 + ... + 433769849.

It is an arithmetic number, because the mean of its divisors is an integer number (2602619016).

Almost surely, 2^12145555394 is an apocalyptic number.

12145555394 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12145555394 is a deficient number, since it is larger than the sum of its proper divisors (8675396734).

12145555394 is an equidigital number, since it uses as much as digits as its factorization.

12145555394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 867539680.

The product of its digits is 540000, while the sum is 44.

The spelling of 12145555394 in words is "twelve billion, one hundred forty-five million, five hundred fifty-five thousand, three hundred ninety-four".