206665160406215 has 16 divisors (see below), whose sum is σ = 284084107822080. Its totient is φ = 141384451788960.

The previous prime is 206665160406209. The next prime is 206665160406217. The reversal of 206665160406215 is 512604061566602.

It is not a de Polignac number, because 206665160406215 - 2⁶ = 206665160406151 is a prime.

It is a super-2 number, since 2×206665160406215² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206665160406217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6850006805 + ... + 6850036974.

It is an arithmetic number, because the mean of its divisors is an integer number (17755256738880).

Almost surely, 2^{206665160406215} is an apocalyptic number.

206665160406215 is a deficient number, since it is larger than the sum of its proper divisors (77418947415865).

206665160406215 is a wasteful number, since it uses less digits than its factorization.

206665160406215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13700044222.

The product of its (nonzero) digits is 3110400, while the sum is 50.

The spelling of 206665160406215 in words is "two hundred six trillion, six hundred sixty-five billion, one hundred sixty million, four hundred six thousand, two hundred fifteen".