205418692056 has 32 divisors (see below), whose sum is σ = 514298669760. Its totient is φ = 68372638752.

The previous prime is 205418692021. The next prime is 205418692069. The reversal of 205418692056 is 650296814502.

It is a junction number, because it is equal to n+sod(n) for n = 205418691996 and 205418692014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6249430 + ... + 6282213.

It is an arithmetic number, because the mean of its divisors is an integer number (16071833430).

Almost surely, 2^205418692056 is an apocalyptic number.

It is an amenable number.

205418692056 is an abundant number, since it is smaller than the sum of its proper divisors (308879977704).

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

205418692056 is a wasteful number, since it uses less digits than its factorization.

205418692056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12532335 (or 12532331 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 48.

The spelling of 205418692056 in words is "two hundred five billion, four hundred eighteen million, six hundred ninety-two thousand, fifty-six".