9619800256720 has 80 divisors (see below), whose sum is σ = 22921229054592. Its totient is φ = 3752677071360.

The previous prime is 9619800256663. The next prime is 9619800256727. The reversal of 9619800256720 is 276520089169.

9619800256720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9619800256727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105085 + ... + 4387555.

Almost surely, 2^{9619800256720} 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 9619800256720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11460614527296).

9619800256720 is an abundant number, since it is smaller than the sum of its proper divisors (13301428797872).

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

9619800256720 is a wasteful number, since it uses less digits than its factorization.

9619800256720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4283180 (or 4283174 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 55.

The spelling of 9619800256720 in words is "nine trillion, six hundred nineteen billion, eight hundred million, two hundred fifty-six thousand, seven hundred twenty".