12394926474840 has 768 divisors, whose sum is σ = 52465480704000. Its totient is φ = 2615184133632.

The previous prime is 12394926474823. The next prime is 12394926474851. The reversal of 12394926474840 is 4847462949321.

12394926474840 is a `hidden beast` number, since 1 + 2 + 3 + 9 + 4 + 92 + 64 + 7 + 484 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 43198489 + ... + 43484471.

It is an arithmetic number, because the mean of its divisors is an integer number (68314428000).

Almost surely, 2^{12394926474840} is an apocalyptic number.

12394926474840 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 12394926474840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26232740352000).

12394926474840 is an abundant number, since it is smaller than the sum of its proper divisors (40070554229160).

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

12394926474840 is a wasteful number, since it uses less digits than its factorization.

12394926474840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286043 (or 286013 counting only the distinct ones).

The product of its (nonzero) digits is 83607552, while the sum is 63.

The spelling of 12394926474840 in words is "twelve trillion, three hundred ninety-four billion, nine hundred twenty-six million, four hundred seventy-four thousand, eight hundred forty".