9561011992 has 16 divisors (see below), whose sum is σ = 20487882960. Its totient is φ = 4097576544.

The previous prime is 9561011987. The next prime is 9561012037. The reversal of 9561011992 is 2991101659.

9561011992 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×9561011992² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85366123 + ... + 85366234.

It is an arithmetic number, because the mean of its divisors is an integer number (1280492685).

Almost surely, 2^9561011992 is an apocalyptic number.

It is an amenable number.

9561011992 is an abundant number, since it is smaller than the sum of its proper divisors (10926870968).

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

9561011992 is a wasteful number, since it uses less digits than its factorization.

9561011992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170732370 (or 170732366 counting only the distinct ones).

The product of its (nonzero) digits is 43740, while the sum is 43.

The square root of 9561011992 is about 97780.4274484418. The cubic root of 9561011992 is about 2122.4360859462.

The spelling of 9561011992 in words is "nine billion, five hundred sixty-one million, eleven thousand, nine hundred ninety-two".