9581472372648 has 256 divisors, whose sum is σ = 26553273062400. Its totient is φ = 2880835372800.

The previous prime is 9581472372629. The next prime is 9581472372671. The reversal of 9581472372648 is 8462732741859.

9581472372648 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×9581472372648² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4222772058 + ... + 4222774326.

It is an arithmetic number, because the mean of its divisors is an integer number (103723722900).

Almost surely, 2^{9581472372648} 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 9581472372648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13276636531200).

9581472372648 is an abundant number, since it is smaller than the sum of its proper divisors (16971800689752).

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

9581472372648 is a wasteful number, since it uses less digits than its factorization.

9581472372648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3285 (or 3259 counting only the distinct ones).

The product of its digits is 162570240, while the sum is 66.

The spelling of 9581472372648 in words is "nine trillion, five hundred eighty-one billion, four hundred seventy-two million, three hundred seventy-two thousand, six hundred forty-eight".