12493393920 has 624 divisors, whose sum is σ = 51766071552. Its totient is φ = 2724986880.

The previous prime is 12493393909. The next prime is 12493393921. The reversal of 12493393920 is 2939339421.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (12493393921) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 29675310 + ... + 29675730.

It is an arithmetic number, because the mean of its divisors is an integer number (82958448).

Almost surely, 2^12493393920 is an apocalyptic number.

12493393920 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 12493393920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25883035776).

12493393920 is an abundant number, since it is smaller than the sum of its proper divisors (39272677632).

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

12493393920 is a wasteful number, since it uses less digits than its factorization.

12493393920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486 (or 461 counting only the distinct ones).

The product of its (nonzero) digits is 314928, while the sum is 45.

The spelling of 12493393920 in words is "twelve billion, four hundred ninety-three million, three hundred ninety-three thousand, nine hundred twenty".