12326872540 has 24 divisors (see below), whose sum is σ = 27011930400. Its totient is φ = 4716368448.

The previous prime is 12326872489. The next prime is 12326872541. The reversal of 12326872540 is 4527862321.

It is a junction number, because it is equal to n+sod(n) for n = 12326872493 and 12326872502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12326872541) 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, 13398315 + ... + 13399234.

It is an arithmetic number, because the mean of its divisors is an integer number (1125497100).

Almost surely, 2^12326872540 is an apocalyptic number.

12326872540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12326872540 is an abundant number, since it is smaller than the sum of its proper divisors (14685057860).

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

12326872540 is a wasteful number, since it uses less digits than its factorization.

12326872540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26797581 (or 26797579 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 40.

The spelling of 12326872540 in words is "twelve billion, three hundred twenty-six million, eight hundred seventy-two thousand, five hundred forty".