205690035054 has 32 divisors (see below), whose sum is σ = 470162612736. Its totient is φ = 58766836320.

The previous prime is 205690035011. The next prime is 205690035091. The reversal of 205690035054 is 450530096502.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2178384 + ... + 2270844.

It is an arithmetic number, because the mean of its divisors is an integer number (14692581648).

Almost surely, 2^205690035054 is an apocalyptic number.

205690035054 is an abundant number, since it is smaller than the sum of its proper divisors (264472577682).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205690035054 is a wasteful number, since it uses less digits than its factorization.

205690035054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145440.

The product of its (nonzero) digits is 162000, while the sum is 39.

The spelling of 205690035054 in words is "two hundred five billion, six hundred ninety million, thirty-five thousand, fifty-four".