211666412763 has 16 divisors (see below), whose sum is σ = 337701399840. Its totient is φ = 130256253792.

The previous prime is 211666412743. The next prime is 211666412777. The reversal of 211666412763 is 367214666112.

It is not a de Polignac number, because 211666412763 - 2¹⁴ = 211666396379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (211666412723) 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, 301518756 + ... + 301519457.

It is an arithmetic number, because the mean of its divisors is an integer number (21106337490).

Almost surely, 2^211666412763 is an apocalyptic number.

211666412763 is a deficient number, since it is larger than the sum of its proper divisors (126034987077).

211666412763 is a wasteful number, since it uses less digits than its factorization.

211666412763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603038235 (or 603038229 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The spelling of 211666412763 in words is "two hundred eleven billion, six hundred sixty-six million, four hundred twelve thousand, seven hundred sixty-three".