9691124040 has 512 divisors, whose sum is σ = 38791872000. Its totient is φ = 2126020608.

The previous prime is 9691124033. The next prime is 9691124077. The reversal of 9691124040 is 404211969.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 9691123986 and 9691124004.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 4533852 + ... + 4535988.

It is an arithmetic number, because the mean of its divisors is an integer number (75765375).

Almost surely, 2^9691124040 is an apocalyptic number.

9691124040 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9691124040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19395936000).

9691124040 is an abundant number, since it is smaller than the sum of its proper divisors (29100747960).

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

9691124040 is a wasteful number, since it uses less digits than its factorization.

9691124040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2206 (or 2196 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 9691124040 is about 98443.5068452968. The cubic root of 9691124040 is about 2132.0205385535.

The spelling of 9691124040 in words is "nine billion, six hundred ninety-one million, one hundred twenty-four thousand, forty".