3999600000000 has 1188 divisors, whose sum is σ = 15904222325784. Its totient is φ = 960000000000.

The previous prime is 3999599999999. The next prime is 3999600000017. The reversal of 3999600000000 is 69993.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 39599999950 + ... + 39600000050.

Almost surely, 2^{3999600000000} is an apocalyptic number.

3999600000000 is a gapful number since it is divisible by the number (30) 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 3999600000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7952111162892).

3999600000000 is an abundant number, since it is smaller than the sum of its proper divisors (11904622325784).

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

3999600000000 is an frugal number, since it uses more digits than its factorization.

3999600000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178 (or 122 counting only the distinct ones).

The product of its (nonzero) digits is 13122, while the sum is 36.

Adding to 3999600000000 its reverse (69993), we get a palindrome (3999600069993).

The spelling of 3999600000000 in words is "three trillion, nine hundred ninety-nine billion, six hundred million", and thus it is an aban number.