205818811024 has 20 divisors (see below), whose sum is σ = 399265678000. Its totient is φ = 102782507040.

The previous prime is 205818811001. The next prime is 205818811087. The reversal of 205818811024 is 420118818502.

It is a super-2 number, since 2×205818811024² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7917774 + ... + 7943725.

It is an arithmetic number, because the mean of its divisors is an integer number (19963283900).

Almost surely, 2^205818811024 is an apocalyptic number.

It is an amenable number.

205818811024 is a deficient number, since it is larger than the sum of its proper divisors (193446866976).

205818811024 is a wasteful number, since it uses less digits than its factorization.

205818811024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15862318 (or 15862312 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 40.

The spelling of 205818811024 in words is "two hundred five billion, eight hundred eighteen million, eight hundred eleven thousand, twenty-four".