211083894647 has 4 divisors (see below), whose sum is σ = 212155386696. Its totient is φ = 210012402600.

The previous prime is 211083894641. The next prime is 211083894661. The reversal of 211083894647 is 746498380112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 211083894647 - 2²⁴ = 211067117431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211083894641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 535745729 + ... + 535746122.

It is an arithmetic number, because the mean of its divisors is an integer number (53038846674).

Almost surely, 2^211083894647 is an apocalyptic number.

211083894647 is a deficient number, since it is larger than the sum of its proper divisors (1071492049).

211083894647 is a wasteful number, since it uses less digits than its factorization.

211083894647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1071492048.

The product of its (nonzero) digits is 2322432, while the sum is 53.

The spelling of 211083894647 in words is "two hundred eleven billion, eighty-three million, eight hundred ninety-four thousand, six hundred forty-seven".