211888636946 has 16 divisors (see below), whose sum is σ = 363542166144. Its totient is φ = 90733290144.

The previous prime is 211888636933. The next prime is 211888636969. The reversal of 211888636946 is 649636888112.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6326510 + ... + 6359913.

It is an arithmetic number, because the mean of its divisors is an integer number (22721385384).

Almost surely, 2^211888636946 is an apocalyptic number.

211888636946 is a deficient number, since it is larger than the sum of its proper divisors (151653529198).

211888636946 is a wasteful number, since it uses less digits than its factorization.

211888636946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12687625.

The product of its digits is 23887872, while the sum is 62.

The spelling of 211888636946 in words is "two hundred eleven billion, eight hundred eighty-eight million, six hundred thirty-six thousand, nine hundred forty-six".