12278141268 has 96 divisors (see below), whose sum is σ = 30940164864. Its totient is φ = 3775684608.

The previous prime is 12278141261. The next prime is 12278141269. The reversal of 12278141268 is 86214187221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12278141261) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2484496 + ... + 2489432.

It is an arithmetic number, because the mean of its divisors is an integer number (322293384).

Almost surely, 2^12278141268 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12278141268, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15470082432).

12278141268 is an abundant number, since it is smaller than the sum of its proper divisors (18662023596).

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

12278141268 is a wasteful number, since it uses less digits than its factorization.

12278141268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5201 (or 5199 counting only the distinct ones).

The product of its digits is 86016, while the sum is 42.

The spelling of 12278141268 in words is "twelve billion, two hundred seventy-eight million, one hundred forty-one thousand, two hundred sixty-eight".