205005053511 has 12 divisors (see below), whose sum is σ = 298079461680. Its totient is φ = 135764935200.

The previous prime is 205005053507. The next prime is 205005053527. The reversal of 205005053511 is 115350500502.

205005053511 is a `hidden beast` number, since 2 + 0 + 50 + 0 + 50 + 53 + 511 = 666.

It is not a de Polignac number, because 205005053511 - 2² = 205005053507 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205005053501) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 75423606 + ... + 75426323.

It is an arithmetic number, because the mean of its divisors is an integer number (24839955140).

Almost surely, 2^205005053511 is an apocalyptic number.

205005053511 is a deficient number, since it is larger than the sum of its proper divisors (93074408169).

205005053511 is a wasteful number, since it uses less digits than its factorization.

205005053511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150850086 (or 150850083 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 27.

The spelling of 205005053511 in words is "two hundred five billion, five million, fifty-three thousand, five hundred eleven".