12440642600 has 48 divisors (see below), whose sum is σ = 28991805120. Its totient is φ = 4964676800.

The previous prime is 12440642573. The next prime is 12440642603. The reversal of 12440642600 is 624604421.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (12440642603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14039 + ... + 158361.

It is an arithmetic number, because the mean of its divisors is an integer number (603995940).

Almost surely, 2^12440642600 is an apocalyptic number.

12440642600 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 12440642600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14495902560).

12440642600 is an abundant number, since it is smaller than the sum of its proper divisors (16551162520).

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

12440642600 is a wasteful number, since it uses less digits than its factorization.

12440642600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144770 (or 144761 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

The spelling of 12440642600 in words is "twelve billion, four hundred forty million, six hundred forty-two thousand, six hundred".