211634041369 has 9 divisors (see below), whose sum is σ = 224823708381. Its totient is φ = 199177619520.

The previous prime is 211634041337. The next prime is 211634041417. The reversal of 211634041369 is 963140436112.

The square root of 211634041369 is 460037.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 3869462025 + 207764579344 = 62205^2 + 455812^2 .

It is not a de Polignac number, because 211634041369 - 2⁵ = 211634041337 is a prime.

It is a super-2 number, since 2×211634041369² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211634041319) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 7807099 + ... + 7834159.

Almost surely, 2^211634041369 is an apocalyptic number.

211634041369 is the 460037-th square number.

211634041369 is the 230019-th centered octagonal number.

It is an amenable number.

211634041369 is a deficient number, since it is larger than the sum of its proper divisors (13189667012).

211634041369 is an frugal number, since it uses more digits than its factorization.

211634041369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54156 (or 27078 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 40.

The spelling of 211634041369 in words is "two hundred eleven billion, six hundred thirty-four million, forty-one thousand, three hundred sixty-nine".