205059922418 has 18 divisors (see below), whose sum is σ = 333084225357. Its totient is φ = 94639198680.

The previous prime is 205059922393. The next prime is 205059922429. The reversal of 205059922418 is 814229950502.

It can be written as a sum of positive squares in 2 ways, for example, as 175332300529 + 29727621889 = 418727^2 + 172417^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=320203.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 8312963 + ... + 8337593.

Almost surely, 2^205059922418 is an apocalyptic number.

205059922418 is a deficient number, since it is larger than the sum of its proper divisors (128024302939).

205059922418 is an frugal number, since it uses more digits than its factorization.

205059922418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49290 (or 24646 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 47.

The spelling of 205059922418 in words is "two hundred five billion, fifty-nine million, nine hundred twenty-two thousand, four hundred eighteen".