205046135611 has 4 divisors (see below), whose sum is σ = 207934109424. Its totient is φ = 202158161800.

The previous prime is 205046135527. The next prime is 205046135641. The reversal of 205046135611 is 116531640502.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-205046135611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205046135641) 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, 1443986800 + ... + 1443986941.

It is an arithmetic number, because the mean of its divisors is an integer number (51983527356).

Almost surely, 2^205046135611 is an apocalyptic number.

205046135611 is a deficient number, since it is larger than the sum of its proper divisors (2887973813).

205046135611 is an equidigital number, since it uses as much as digits as its factorization.

205046135611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2887973812.

The product of its (nonzero) digits is 21600, while the sum is 34.

The spelling of 205046135611 in words is "two hundred five billion, forty-six million, one hundred thirty-five thousand, six hundred eleven".