3889017078920 has 16 divisors (see below), whose sum is σ = 8750288427660. Its totient is φ = 1555606831552.

The previous prime is 3889017078917. The next prime is 3889017078967. The reversal of 3889017078920 is 298707109883.

3889017078920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 3132892920004 + 756124158916 = 1769998^2 + 869554^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48612713447 + ... + 48612713526.

Almost surely, 2^{3889017078920} is an apocalyptic number.

It is an amenable number.

3889017078920 is an abundant number, since it is smaller than the sum of its proper divisors (4861271348740).

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

3889017078920 is a wasteful number, since it uses less digits than its factorization.

3889017078920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97225426984 (or 97225426980 counting only the distinct ones).

The product of its (nonzero) digits is 12192768, while the sum is 62.

The spelling of 3889017078920 in words is "three trillion, eight hundred eighty-nine billion, seventeen million, seventy-eight thousand, nine hundred twenty".