566661165000 has 320 divisors, whose sum is σ = 2026983657600. Its totient is φ = 129276672000.

The previous prime is 566661164987. The next prime is 566661165023. The reversal of 566661165000 is 561166665.

It is a super-2 number, since 2×566661165000² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 58480156 + ... + 58489844.

It is an arithmetic number, because the mean of its divisors is an integer number (6334323930).

Almost surely, 2^566661165000 is an apocalyptic number.

566661165000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 566661165000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1013491828800).

566661165000 is an abundant number, since it is smaller than the sum of its proper divisors (1460322492600).

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

566661165000 is a wasteful number, since it uses less digits than its factorization.

566661165000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10282 (or 10263 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 42.

The spelling of 566661165000 in words is "five hundred sixty-six billion, six hundred sixty-one million, one hundred sixty-five thousand".