9951572880 has 240 divisors, whose sum is σ = 36529519104. Its totient is φ = 2416988160.

The previous prime is 9951572843. The next prime is 9951572881. The reversal of 9951572880 is 882751599.

It is a tau number, because it is divible by the number of its divisors (240).

It is not an unprimeable number, because it can be changed into a prime (9951572881) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 366327 + ... + 392553.

Almost surely, 2^9951572880 is an apocalyptic number.

9951572880 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 9951572880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18264759552).

9951572880 is an abundant number, since it is smaller than the sum of its proper divisors (26577946224).

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

9951572880 is a wasteful number, since it uses less digits than its factorization.

9951572880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26294 (or 26285 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 54.

The square root of 9951572880 is about 99757.5705397841. The cubic root of 9951572880 is about 2150.9512920259.

The spelling of 9951572880 in words is "nine billion, nine hundred fifty-one million, five hundred seventy-two thousand, eight hundred eighty".