9951251112 has 240 divisors, whose sum is σ = 30966455520. Its totient is φ = 2960971200.

The previous prime is 9951251111. The next prime is 9951251143. The reversal of 9951251112 is 2111521599.

9951251112 is a `hidden beast` number, since 99 + 51 + 2 + 511 + 1 + 2 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (9951251111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 31997437 + ... + 31997747.

It is an arithmetic number, because the mean of its divisors is an integer number (129026898).

Almost surely, 2^9951251112 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 9951251112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15483227760).

9951251112 is an abundant number, since it is smaller than the sum of its proper divisors (21015204408).

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

9951251112 is a wasteful number, since it uses less digits than its factorization.

9951251112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474 (or 394 counting only the distinct ones).

The product of its digits is 8100, while the sum is 36.

The square root of 9951251112 is about 99755.9577769669. The cubic root of 9951251112 is about 2150.9281092667.

The spelling of 9951251112 in words is "nine billion, nine hundred fifty-one million, two hundred fifty-one thousand, one hundred twelve".