3950440012720 has 40 divisors (see below), whose sum is σ = 9251815194144. Its totient is φ = 1568641869312.

The previous prime is 3950440012697. The next prime is 3950440012751. The reversal of 3950440012720 is 272100440593.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 3950440012720.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180209844 + ... + 180231763.

Almost surely, 2^{3950440012720} is an apocalyptic number.

It is an amenable number.

3950440012720 is an abundant number, since it is smaller than the sum of its proper divisors (5301375181424).

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

3950440012720 is a wasteful number, since it uses less digits than its factorization.

3950440012720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360441757 (or 360441751 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 37.

The spelling of 3950440012720 in words is "three trillion, nine hundred fifty billion, four hundred forty million, twelve thousand, seven hundred twenty".