211415254166 has 16 divisors (see below), whose sum is σ = 321905469600. Its totient is φ = 104122463808.

The previous prime is 211415254153. The next prime is 211415254177. The reversal of 211415254166 is 661452514112.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2211221 + ... + 2304848.

It is an arithmetic number, because the mean of its divisors is an integer number (20119091850).

Almost surely, 2^211415254166 is an apocalyptic number.

211415254166 is a deficient number, since it is larger than the sum of its proper divisors (110490215434).

211415254166 is a wasteful number, since it uses less digits than its factorization.

211415254166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4516423.

The product of its digits is 57600, while the sum is 38.

Adding to 211415254166 its reverse (661452514112), we get a palindrome (872867768278).

The spelling of 211415254166 in words is "two hundred eleven billion, four hundred fifteen million, two hundred fifty-four thousand, one hundred sixty-six".