12493578240 has 896 divisors, whose sum is σ = 52845004800. Its totient is φ = 2760376320.

The previous prime is 12493578221. The next prime is 12493578271. The reversal of 12493578240 is 4287539421.

12493578240 is a `hidden beast` number, since 12 + 49 + 3 + 578 + 24 + 0 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 158146521 + ... + 158146599.

It is an arithmetic number, because the mean of its divisors is an integer number (58978800).

Almost surely, 2^12493578240 is an apocalyptic number.

12493578240 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 12493578240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26422502400).

12493578240 is an abundant number, since it is smaller than the sum of its proper divisors (40351426560).

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

12493578240 is a wasteful number, since it uses less digits than its factorization.

12493578240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143 (or 113 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 12493578240 in words is "twelve billion, four hundred ninety-three million, five hundred seventy-eight thousand, two hundred forty".