12368635428 has 72 divisors (see below), whose sum is σ = 31282672512. Its totient is φ = 3800271168.

The previous prime is 12368635427. The next prime is 12368635429. The reversal of 12368635428 is 82453686321.

It is an interprime number because it is at equal distance from previous prime (12368635427) and next prime (12368635429).

It is not an unprimeable number, because it can be changed into a prime (12368635421) 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, 121701 + ... + 198867.

Almost surely, 2^12368635428 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 12368635428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15641336256).

12368635428 is an abundant number, since it is smaller than the sum of its proper divisors (18914037084).

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

12368635428 is a wasteful number, since it uses less digits than its factorization.

12368635428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77249 (or 77228 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 48.

The spelling of 12368635428 in words is "twelve billion, three hundred sixty-eight million, six hundred thirty-five thousand, four hundred twenty-eight".