12399562506240 has 2880 divisors, whose sum is σ = 56884099184640. Its totient is φ = 2425733775360.

The previous prime is 12399562506229. The next prime is 12399562506241. The reversal of 12399562506240 is 4260526599321.

12399562506240 is a `hidden beast` number, since 1 + 2 + 3 + 9 + 9 + 5 + 6 + 2 + 5 + 0 + 624 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (2880).

It is not an unprimeable number, because it can be changed into a prime (12399562506241) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 90507755452 + ... + 90507755588.

It is an arithmetic number, because the mean of its divisors is an integer number (19751423328).

Almost surely, 2^{12399562506240} is an apocalyptic number.

12399562506240 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 12399562506240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28442049592320).

12399562506240 is an abundant number, since it is smaller than the sum of its proper divisors (44484536678400).

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

12399562506240 is a wasteful number, since it uses less digits than its factorization.

12399562506240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286 (or 257 counting only the distinct ones).

The product of its (nonzero) digits is 6998400, while the sum is 54.

The spelling of 12399562506240 in words is "twelve trillion, three hundred ninety-nine billion, five hundred sixty-two million, five hundred six thousand, two hundred forty".