12281315578 has 8 divisors (see below), whose sum is σ = 21053683872. Its totient is φ = 5263420956.

The previous prime is 12281315561. The next prime is 12281315581. The reversal of 12281315578 is 87551318221.

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

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, 438618400 + ... + 438618427.

It is an arithmetic number, because the mean of its divisors is an integer number (2631710484).

Almost surely, 2^12281315578 is an apocalyptic number.

12281315578 is a deficient number, since it is larger than the sum of its proper divisors (8772368294).

12281315578 is an equidigital number, since it uses as much as digits as its factorization.

12281315578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 877236836.

The product of its digits is 134400, while the sum is 43.

The spelling of 12281315578 in words is "twelve billion, two hundred eighty-one million, three hundred fifteen thousand, five hundred seventy-eight".