9561921136 has 20 divisors (see below), whose sum is σ = 18561661432. Its totient is φ = 4771814976.

The previous prime is 9561921079. The next prime is 9561921163. The reversal of 9561921136 is 6311291659.

It is a super-2 number, since 2×9561921136² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9561921092 and 9561921101.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 562971 + ... + 579706.

Almost surely, 2^9561921136 is an apocalyptic number.

It is an amenable number.

9561921136 is a deficient number, since it is larger than the sum of its proper divisors (8999740296).

9561921136 is a wasteful number, since it uses less digits than its factorization.

9561921136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1143208 (or 1143202 counting only the distinct ones).

The product of its digits is 87480, while the sum is 43.

The square root of 9561921136 is about 97785.0762437704. The cubic root of 9561921136 is about 2122.5033570285.

The spelling of 9561921136 in words is "nine billion, five hundred sixty-one million, nine hundred twenty-one thousand, one hundred thirty-six".