12399404525712 has 320 divisors, whose sum is σ = 37693225574400. Its totient is φ = 3896412387840.

The previous prime is 12399404525699. The next prime is 12399404525737. The reversal of 12399404525712 is 21752540499321.

12399404525712 is a `hidden beast` number, since 1 + 2 + 3 + 9 + 9 + 40 + 4 + 525 + 71 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 218221018 + ... + 218277830.

It is an arithmetic number, because the mean of its divisors is an integer number (117791329920).

Almost surely, 2^{12399404525712} is an apocalyptic number.

12399404525712 is a gapful number since it is divisible by the number (12) 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 12399404525712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18846612787200).

12399404525712 is an abundant number, since it is smaller than the sum of its proper divisors (25293821048688).

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

12399404525712 is a wasteful number, since it uses less digits than its factorization.

12399404525712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57283 (or 57271 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 54.

The spelling of 12399404525712 in words is "twelve trillion, three hundred ninety-nine billion, four hundred four million, five hundred twenty-five thousand, seven hundred twelve".