12399523610400 has 360 divisors, whose sum is σ = 45518148777024. Its totient is φ = 3284639424000.

The previous prime is 12399523610377. The next prime is 12399523610431. The reversal of 12399523610400 is 401632599321.

12399523610400 is a `hidden beast` number, since 1 + 2 + 3 + 9 + 9 + 5 + 23 + 610 + 4 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (360).

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

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 9151189 + ... + 10418411.

Almost surely, 2^{12399523610400} is an apocalyptic number.

12399523610400 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 12399523610400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22759074388512).

12399523610400 is an abundant number, since it is smaller than the sum of its proper divisors (33118625166624).

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

12399523610400 is a wasteful number, since it uses less digits than its factorization.

12399523610400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1267406 (or 1267384 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The spelling of 12399523610400 in words is "twelve trillion, three hundred ninety-nine billion, five hundred twenty-three million, six hundred ten thousand, four hundred".