12430743556 has 72 divisors (see below), whose sum is σ = 27638404416. Its totient is φ = 4837452480.

The previous prime is 12430743527. The next prime is 12430743581. The reversal of 12430743556 is 65534703421.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2146641 + ... + 2152423.

It is an arithmetic number, because the mean of its divisors is an integer number (383866728).

Almost surely, 2^12430743556 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 12430743556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13819202208).

12430743556 is an abundant number, since it is smaller than the sum of its proper divisors (15207660860).

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

12430743556 is a wasteful number, since it uses less digits than its factorization.

12430743556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6809 (or 6800 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 40.

The spelling of 12430743556 in words is "twelve billion, four hundred thirty million, seven hundred forty-three thousand, five hundred fifty-six".