12389460720 has 640 divisors, whose sum is σ = 50563430400. Its totient is φ = 2436562944.

The previous prime is 12389460697. The next prime is 12389460731. The reversal of 12389460720 is 2706498321.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 30291876 + ... + 30292284.

It is an arithmetic number, because the mean of its divisors is an integer number (79005360).

Almost surely, 2^12389460720 is an apocalyptic number.

12389460720 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 12389460720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25281715200).

12389460720 is an abundant number, since it is smaller than the sum of its proper divisors (38173969680).

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

12389460720 is a wasteful number, since it uses less digits than its factorization.

12389460720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537 (or 531 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The spelling of 12389460720 in words is "twelve billion, three hundred eighty-nine million, four hundred sixty thousand, seven hundred twenty".