12240037656 has 480 divisors, whose sum is σ = 44609796000. Its totient is φ = 3065610240.

The previous prime is 12240037619. The next prime is 12240037661. The reversal of 12240037656 is 65673004221.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 12240037656.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 15916440 + ... + 15917208.

It is an arithmetic number, because the mean of its divisors is an integer number (92937075).

Almost surely, 2^12240037656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12240037656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22304898000).

12240037656 is an abundant number, since it is smaller than the sum of its proper divisors (32369758344).

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

12240037656 is a wasteful number, since it uses less digits than its factorization.

12240037656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 845 (or 821 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The spelling of 12240037656 in words is "twelve billion, two hundred forty million, thirty-seven thousand, six hundred fifty-six".