1566606536009 has 8 divisors (see below), whose sum is σ = 1577932914240. Its totient is φ = 1555301076336.

The previous prime is 1566606535937. The next prime is 1566606536017. The reversal of 1566606536009 is 9006356066651.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1566606536009 - 2¹² = 1566606531913 is a prime.

It is a super-2 number, since 2×1566606536009² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1566606536029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5079302 + ... + 5378895.

It is an arithmetic number, because the mean of its divisors is an integer number (197241614280).

Almost surely, 2^{1566606536009} is an apocalyptic number.

It is an amenable number.

1566606536009 is a deficient number, since it is larger than the sum of its proper divisors (11326378231).

1566606536009 is a wasteful number, since it uses less digits than its factorization.

1566606536009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10459279.

The product of its (nonzero) digits is 5248800, while the sum is 53.

The spelling of 1566606536009 in words is "one trillion, five hundred sixty-six billion, six hundred six million, five hundred thirty-six thousand, nine".