12412542440 has 64 divisors (see below), whose sum is σ = 28746057600. Its totient is φ = 4820214528.

The previous prime is 12412542437. The next prime is 12412542451. The reversal of 12412542440 is 4424521421.

It is a happy 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 15 ways as a sum of consecutive naturals, for example, 682181 + ... + 700139.

It is an arithmetic number, because the mean of its divisors is an integer number (449157150).

Almost surely, 2^12412542440 is an apocalyptic number.

12412542440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12412542440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14373028800).

12412542440 is an abundant number, since it is smaller than the sum of its proper divisors (16333515160).

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

12412542440 is a wasteful number, since it uses less digits than its factorization.

12412542440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18474 (or 18470 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 29.

The spelling of 12412542440 in words is "twelve billion, four hundred twelve million, five hundred forty-two thousand, four hundred forty".