12278892147 has 8 divisors (see below), whose sum is σ = 16373637120. Its totient is φ = 8185037640.

The previous prime is 12278892121. The next prime is 12278892151. The reversal of 12278892147 is 74129887221.

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

It is not a de Polignac number, because 12278892147 - 2¹⁵ = 12278859379 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12278892147.

It is not an unprimeable number, because it can be changed into a prime (12278892167) 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, 189747 + ... + 246092.

It is an arithmetic number, because the mean of its divisors is an integer number (2046704640).

Almost surely, 2^12278892147 is an apocalyptic number.

12278892147 is a deficient number, since it is larger than the sum of its proper divisors (4094744973).

12278892147 is an equidigital number, since it uses as much as digits as its factorization.

12278892147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445233.

The product of its digits is 903168, while the sum is 51.

The spelling of 12278892147 in words is "twelve billion, two hundred seventy-eight million, eight hundred ninety-two thousand, one hundred forty-seven".