8621561132 has 24 divisors (see below), whose sum is σ = 15747115776. Its totient is φ = 4122466128.

The previous prime is 8621561077. The next prime is 8621561141. The reversal of 8621561132 is 2311651268.

It is a junction number, because it is equal to n+sod(n) for n = 8621561092 and 8621561101.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 656543 + ... + 669545.

It is an arithmetic number, because the mean of its divisors is an integer number (656129824).

Almost surely, 2^8621561132 is an apocalyptic number.

It is an amenable number.

8621561132 is a deficient number, since it is larger than the sum of its proper divisors (7125554644).

8621561132 is a wasteful number, since it uses less digits than its factorization.

8621561132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20237 (or 20235 counting only the distinct ones).

The product of its digits is 17280, while the sum is 35.

The square root of 8621561132 is about 92852.3620162675. The cubic root of 8621561132 is about 2050.5103731834.

The spelling of 8621561132 in words is "eight billion, six hundred twenty-one million, five hundred sixty-one thousand, one hundred thirty-two".