9656556812 has 18 divisors (see below), whose sum is σ = 19657991052. Its totient is φ = 4138524264.

The previous prime is 9656556809. The next prime is 9656556859. The reversal of 9656556812 is 2186556569.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24633878 + ... + 24634269.

It is an arithmetic number, because the mean of its divisors is an integer number (1092110614).

Almost surely, 2^9656556812 is an apocalyptic number.

It is an amenable number.

9656556812 is an abundant number, since it is smaller than the sum of its proper divisors (10001434240).

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

9656556812 is a wasteful number, since it uses less digits than its factorization.

9656556812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49268165 (or 49268156 counting only the distinct ones).

The product of its digits is 3888000, while the sum is 53.

The square root of 9656556812 is about 98267.7811492658. The cubic root of 9656556812 is about 2129.4826204128.

The spelling of 9656556812 in words is "nine billion, six hundred fifty-six million, five hundred fifty-six thousand, eight hundred twelve".