9156556520 has 16 divisors (see below), whose sum is σ = 20602252260. Its totient is φ = 3662622592.

The previous prime is 9156556511. The next prime is 9156556531. The reversal of 9156556520 is 256556519.

9156556520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 9130566916 + 25989604 = 95554^2 + 5098^2 .

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, 114456917 + ... + 114456996.

Almost surely, 2^9156556520 is an apocalyptic number.

It is an amenable number.

9156556520 is an abundant number, since it is smaller than the sum of its proper divisors (11445695740).

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

9156556520 is a wasteful number, since it uses less digits than its factorization.

9156556520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228913924 (or 228913920 counting only the distinct ones).

The product of its (nonzero) digits is 405000, while the sum is 44.

The square root of 9156556520 is about 95689.8976904041. The cubic root of 9156556520 is about 2092.0756924648.

The spelling of 9156556520 in words is "nine billion, one hundred fifty-six million, five hundred fifty-six thousand, five hundred twenty".