12259227078 has 48 divisors (see below), whose sum is σ = 31335422976. Its totient is φ = 3389646960.

The previous prime is 12259227077. The next prime is 12259227089. The reversal of 12259227078 is 87072295221.

12259227078 is a `hidden beast` number, since 1 + 225 + 92 + 270 + 78 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12259227077) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1565376 + ... + 1573187.

It is an arithmetic number, because the mean of its divisors is an integer number (652821312).

Almost surely, 2^12259227078 is an apocalyptic number.

12259227078 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12259227078 is an abundant number, since it is smaller than the sum of its proper divisors (19076195898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12259227078 is a wasteful number, since it uses less digits than its factorization.

12259227078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3138609 (or 3138606 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 45.

The spelling of 12259227078 in words is "twelve billion, two hundred fifty-nine million, two hundred twenty-seven thousand, seventy-eight".