3999613011072 has 192 divisors, whose sum is σ = 12362436108000. Its totient is φ = 1142382452736.

The previous prime is 3999613011059. The next prime is 3999613011077. The reversal of 3999613011072 is 2701103169993.

It is a tau number, because it is divible by the number of its divisors (192).

It is not an unprimeable number, because it can be changed into a prime (3999613011077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62041768 + ... + 62106200.

Almost surely, 2^{3999613011072} is an apocalyptic number.

3999613011072 is a gapful number since it is divisible by the number (32) 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 3999613011072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6181218054000).

3999613011072 is an abundant number, since it is smaller than the sum of its proper divisors (8362823096928).

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

3999613011072 is a wasteful number, since it uses less digits than its factorization.

3999613011072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67763 (or 67744 counting only the distinct ones).

The product of its (nonzero) digits is 551124, while the sum is 51.

The spelling of 3999613011072 in words is "three trillion, nine hundred ninety-nine billion, six hundred thirteen million, eleven thousand, seventy-two".