205135673211 has 24 divisors (see below), whose sum is σ = 349560433664. Its totient is φ = 113439080880.

The previous prime is 205135673207. The next prime is 205135673221. The reversal of 205135673211 is 112376531502.

205135673211 is a `hidden beast` number, since 2 + 0 + 51 + 3 + 567 + 32 + 11 = 666.

It is not a de Polignac number, because 205135673211 - 2² = 205135673207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205135673221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52516141 + ... + 52520046.

Almost surely, 2^205135673211 is an apocalyptic number.

205135673211 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

205135673211 is a deficient number, since it is larger than the sum of its proper divisors (144424760453).

205135673211 is a wasteful number, since it uses less digits than its factorization.

205135673211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105036231 (or 105036228 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The spelling of 205135673211 in words is "two hundred five billion, one hundred thirty-five million, six hundred seventy-three thousand, two hundred eleven".