9845393591544 has 128 divisors (see below), whose sum is σ = 28628920320000. Its totient is φ = 2763405051264.

The previous prime is 9845393591543. The next prime is 9845393591581. The reversal of 9845393591544 is 4451953935489.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9845393591543) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 777267 + ... + 4504989.

It is an arithmetic number, because the mean of its divisors is an integer number (223663440000).

Almost surely, 2^{9845393591544} 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 9845393591544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14314460160000).

9845393591544 is an abundant number, since it is smaller than the sum of its proper divisors (18783526728456).

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

9845393591544 is a wasteful number, since it uses less digits than its factorization.

9845393591544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3728017 (or 3728013 counting only the distinct ones).

The product of its digits is 419904000, while the sum is 69.

The spelling of 9845393591544 in words is "nine trillion, eight hundred forty-five billion, three hundred ninety-three million, five hundred ninety-one thousand, five hundred forty-four".