12680022438 has 24 divisors (see below), whose sum is σ = 28919350200. Its totient is φ = 4004217504.

The previous prime is 12680022403. The next prime is 12680022479. The reversal of 12680022438 is 83422008621.

12680022438 is a `hidden beast` number, since 126 + 80 + 0 + 22 + 438 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18537703 + ... + 18538386.

It is an arithmetic number, because the mean of its divisors is an integer number (1204972925).

Almost surely, 2^12680022438 is an apocalyptic number.

12680022438 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12680022438 is an abundant number, since it is smaller than the sum of its proper divisors (16239327762).

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

12680022438 is a wasteful number, since it uses less digits than its factorization.

12680022438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37076116 (or 37076113 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The spelling of 12680022438 in words is "twelve billion, six hundred eighty million, twenty-two thousand, four hundred thirty-eight".