211428452766 has 16 divisors (see below), whose sum is σ = 432690787584. Its totient is φ = 68837170584.

The previous prime is 211428452747. The next prime is 211428452773. The reversal of 211428452766 is 667254824112.

211428452766 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 409744806 + ... + 409745321.

It is an arithmetic number, because the mean of its divisors is an integer number (27043174224).

Almost surely, 2^211428452766 is an apocalyptic number.

211428452766 is an abundant number, since it is smaller than the sum of its proper divisors (221262334818).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211428452766 is a wasteful number, since it uses less digits than its factorization.

211428452766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819490175.

The product of its digits is 1290240, while the sum is 48.

The spelling of 211428452766 in words is "two hundred eleven billion, four hundred twenty-eight million, four hundred fifty-two thousand, seven hundred sixty-six".