211612399173 has 24 divisors (see below), whose sum is σ = 349366962048. Its totient is φ = 120908024352.

The previous prime is 211612399127. The next prime is 211612399199. The reversal of 211612399173 is 371993216112.

211612399173 is a `hidden beast` number, since 2 + 11 + 612 + 3 + 9 + 9 + 17 + 3 = 666.

It is not a de Polignac number, because 211612399173 - 2¹⁶ = 211612333637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211612599173) 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 23 ways as a sum of consecutive naturals, for example, 404736 + ... + 766182.

It is an arithmetic number, because the mean of its divisors is an integer number (14556956752).

Almost surely, 2^211612399173 is an apocalyptic number.

It is an amenable number.

211612399173 is a deficient number, since it is larger than the sum of its proper divisors (137754562875).

211612399173 is a wasteful number, since it uses less digits than its factorization.

211612399173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370753 (or 370750 counting only the distinct ones).

The product of its digits is 122472, while the sum is 45.

The spelling of 211612399173 in words is "two hundred eleven billion, six hundred twelve million, three hundred ninety-nine thousand, one hundred seventy-three".