12396243540 has 24 divisors (see below), whose sum is σ = 34709482080. Its totient is φ = 3305664928.

The previous prime is 12396243499. The next prime is 12396243589. The reversal of 12396243540 is 4534269321.

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 7 ways as a sum of consecutive naturals, for example, 103301970 + ... + 103302089.

It is an arithmetic number, because the mean of its divisors is an integer number (1446228420).

Almost surely, 2^12396243540 is an apocalyptic number.

12396243540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12396243540 is an abundant number, since it is smaller than the sum of its proper divisors (22313238540).

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

12396243540 is a wasteful number, since it uses less digits than its factorization.

12396243540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206604071 (or 206604069 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 39.

The spelling of 12396243540 in words is "twelve billion, three hundred ninety-six million, two hundred forty-three thousand, five hundred forty".