1566145206000 has 960 divisors, whose sum is σ = 5819142551040. Its totient is φ = 406989619200.

The previous prime is 1566145205971. The next prime is 1566145206011. The reversal of 1566145206000 is 6025416651.

1566145206000 is a `hidden beast` number, since 1 + 5 + 6 + 6 + 1 + 45 + 2 + 0 + 600 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 5534081859 + ... + 5534082141.

It is an arithmetic number, because the mean of its divisors is an integer number (6061606824).

Almost surely, 2^{1566145206000} is an apocalyptic number.

1566145206000 is a gapful number since it is divisible by the number (10) 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 1566145206000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2909571275520).

1566145206000 is an abundant number, since it is smaller than the sum of its proper divisors (4252997345040).

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

1566145206000 is a wasteful number, since it uses less digits than its factorization.

1566145206000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573 (or 545 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The spelling of 1566145206000 in words is "one trillion, five hundred sixty-six billion, one hundred forty-five million, two hundred six thousand".