9961424272 has 40 divisors (see below), whose sum is σ = 20407304960. Its totient is φ = 4697377920.

The previous prime is 9961424267. The next prime is 9961424293. The reversal of 9961424272 is 2724241699.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5679 + ... + 141262.

It is an arithmetic number, because the mean of its divisors is an integer number (510182624).

Almost surely, 2^9961424272 is an apocalyptic number.

It is an amenable number.

9961424272 is an abundant number, since it is smaller than the sum of its proper divisors (10445880688).

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

9961424272 is a wasteful number, since it uses less digits than its factorization.

9961424272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147191 (or 147185 counting only the distinct ones).

The product of its digits is 435456, while the sum is 46.

The square root of 9961424272 is about 99806.9349895086. The cubic root of 9961424272 is about 2151.6608239517.

The spelling of 9961424272 in words is "nine billion, nine hundred sixty-one million, four hundred twenty-four thousand, two hundred seventy-two".