9951550312 has 64 divisors (see below), whose sum is σ = 21038284800. Its totient is φ = 4372056000.

The previous prime is 9951550307. The next prime is 9951550331. The reversal of 9951550312 is 2130551599.

It is a super-2 number, since 2×9951550312² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2832637 + ... + 2836147.

It is an arithmetic number, because the mean of its divisors is an integer number (328723200).

Almost surely, 2^9951550312 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 9951550312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10519142400).

9951550312 is an abundant number, since it is smaller than the sum of its proper divisors (11086734488).

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

9951550312 is a wasteful number, since it uses less digits than its factorization.

9951550312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4598 (or 4594 counting only the distinct ones).

The product of its (nonzero) digits is 60750, while the sum is 40.

The square root of 9951550312 is about 99757.4574254978. The cubic root of 9951550312 is about 2150.9496660617.

The spelling of 9951550312 in words is "nine billion, nine hundred fifty-one million, five hundred fifty thousand, three hundred twelve".