3999251630976 has 384 divisors, whose sum is σ = 12512528006400. Its totient is φ = 1128331911168.

The previous prime is 3999251630947. The next prime is 3999251630981. The reversal of 3999251630976 is 6790361529993.

It is a tau number, because it is divible by the number of its divisors (384).

It is a self number, because there is not a number n which added to its sum of digits gives 3999251630976.

It is a congruent number.

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 47 ways as a sum of consecutive naturals, for example, 2289210135 + ... + 2289211881.

It is an arithmetic number, because the mean of its divisors is an integer number (32584708350).

Almost surely, 2^{3999251630976} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3999251630976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6256264003200).

3999251630976 is an abundant number, since it is smaller than the sum of its proper divisors (8513276375424).

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

3999251630976 is a wasteful number, since it uses less digits than its factorization.

3999251630976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3234 (or 3215 counting only the distinct ones).

The product of its (nonzero) digits is 148803480, while the sum is 69.

The spelling of 3999251630976 in words is "three trillion, nine hundred ninety-nine billion, two hundred fifty-one million, six hundred thirty thousand, nine hundred seventy-six".