211285379663 has 16 divisors (see below), whose sum is σ = 224120554560. Its totient is φ = 198829881600.

The previous prime is 211285379651. The next prime is 211285379681. The reversal of 211285379663 is 366973582112.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 211285379663 - 2⁸ = 211285379407 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 (211285379693) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1139681 + ... + 1312037.

It is an arithmetic number, because the mean of its divisors is an integer number (14007534660).

Almost surely, 2^211285379663 is an apocalyptic number.

211285379663 is a deficient number, since it is larger than the sum of its proper divisors (12835174897).

211285379663 is a wasteful number, since it uses less digits than its factorization.

211285379663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173458.

The product of its digits is 3265920, while the sum is 53.

The spelling of 211285379663 in words is "two hundred eleven billion, two hundred eighty-five million, three hundred seventy-nine thousand, six hundred sixty-three".