166515002211 has 16 divisors (see below), whose sum is σ = 223303132800. Its totient is φ = 110368675008.

The previous prime is 166515002201. The next prime is 166515002219. The reversal of 166515002211 is 112200515661.

It is not a de Polignac number, because 166515002211 - 2⁷ = 166515002083 is a prime.

It is a super-2 number, since 2×166515002211² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (166515002219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3076495 + ... + 3130151.

It is an arithmetic number, because the mean of its divisors is an integer number (13956445800).

Almost surely, 2^166515002211 is an apocalyptic number.

166515002211 is a deficient number, since it is larger than the sum of its proper divisors (56788130589).

166515002211 is a wasteful number, since it uses less digits than its factorization.

166515002211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59618.

The product of its (nonzero) digits is 3600, while the sum is 30.

Adding to 166515002211 its reverse (112200515661), we get a palindrome (278715517872).

The spelling of 166515002211 in words is "one hundred sixty-six billion, five hundred fifteen million, two thousand, two hundred eleven".