206166240001 has 16 divisors (see below), whose sum is σ = 215888375808. Its totient is φ = 196653816000.

The previous prime is 206166239987. The next prime is 206166240019. The reversal of 206166240001 is 100042661602.

It is a cyclic number.

It is not a de Polignac number, because 206166240001 - 2¹³ = 206166231809 is a prime.

It is a super-2 number, since 2×206166240001² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206166240031) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 550575 + ... + 845851.

It is an arithmetic number, because the mean of its divisors is an integer number (13493023488).

Almost surely, 2^206166240001 is an apocalyptic number.

It is an amenable number.

206166240001 is a deficient number, since it is larger than the sum of its proper divisors (9722135807).

206166240001 is a wasteful number, since it uses less digits than its factorization.

206166240001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295632.

The product of its (nonzero) digits is 3456, while the sum is 28.

The spelling of 206166240001 in words is "two hundred six billion, one hundred sixty-six million, two hundred forty thousand, one".