9856631040 has 216 divisors, whose sum is σ = 32540022144. Its totient is φ = 2542694400.

The previous prime is 9856631023. The next prime is 9856631069. The reversal of 9856631040 is 401366589.

It is a junction number, because it is equal to n+sod(n) for n = 9856630983 and 9856631001.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3688905 + ... + 3691575.

Almost surely, 2^9856631040 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 9856631040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16270011072).

9856631040 is an abundant number, since it is smaller than the sum of its proper divisors (22683391104).

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

9856631040 is a wasteful number, since it uses less digits than its factorization.

9856631040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2757 (or 2712 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 9856631040 is about 99280.5672828273. The cubic root of 9856631040 is about 2144.0891215645.

The spelling of 9856631040 in words is "nine billion, eight hundred fifty-six million, six hundred thirty-one thousand, forty".