8661655296 has 216 divisors, whose sum is σ = 29599932544. Its totient is φ = 2474634240.

The previous prime is 8661655283. The next prime is 8661655309. The reversal of 8661655296 is 6925561668.

8661655296 is a `hidden beast` number, since 86 + 6 + 1 + 6 + 552 + 9 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (8661655283) and next prime (8661655309).

It is a tau number, because it is divible by the number of its divisors (216).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 425511 + ... + 445401.

Almost surely, 2^8661655296 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8661655296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14799966272).

8661655296 is an abundant number, since it is smaller than the sum of its proper divisors (20938277248).

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

8661655296 is an equidigital number, since it uses as much as digits as its factorization.

8661655296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19929 (or 19903 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 54.

The square root of 8661655296 is about 93068.0143550941. The cubic root of 8661655296 is about 2053.6840592030.

The spelling of 8661655296 in words is "eight billion, six hundred sixty-one million, six hundred fifty-five thousand, two hundred ninety-six".