9963137808 has 320 divisors, whose sum is σ = 31686860800. Its totient is φ = 2978519040.

The previous prime is 9963137773. The next prime is 9963137809. The reversal of 9963137808 is 8087313699.

It is a super-2 number, since 2×9963137808² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (9963137809) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 43507038 + ... + 43507266.

It is an arithmetic number, because the mean of its divisors is an integer number (99021440).

Almost surely, 2^9963137808 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 9963137808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15843430400).

9963137808 is an abundant number, since it is smaller than the sum of its proper divisors (21723722992).

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

9963137808 is a wasteful number, since it uses less digits than its factorization.

9963137808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447 (or 435 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 54.

The square root of 9963137808 is about 99815.5188735700. The cubic root of 9963137808 is about 2151.7841910792.

The spelling of 9963137808 in words is "nine billion, nine hundred sixty-three million, one hundred thirty-seven thousand, eight hundred eight".