205367690796 has 12 divisors (see below), whose sum is σ = 479191278552. Its totient is φ = 68455896928.

The previous prime is 205367690771. The next prime is 205367690797. The reversal of 205367690796 is 697096763502.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×205367690796² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (205367690797) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8556987105 + ... + 8556987128.

It is an arithmetic number, because the mean of its divisors is an integer number (39932606546).

Almost surely, 2^205367690796 is an apocalyptic number.

It is an amenable number.

205367690796 is an abundant number, since it is smaller than the sum of its proper divisors (273823587756).

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

205367690796 is a wasteful number, since it uses less digits than its factorization.

205367690796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17113974240 (or 17113974238 counting only the distinct ones).

The product of its (nonzero) digits is 25719120, while the sum is 60.

The spelling of 205367690796 in words is "two hundred five billion, three hundred sixty-seven million, six hundred ninety thousand, seven hundred ninety-six".