205348774992 has 80 divisors (see below), whose sum is σ = 548117061120. Its totient is φ = 66178598400.

The previous prime is 205348774991. The next prime is 205348775029. The reversal of 205348774992 is 299477843502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205348774991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1513734 + ... + 1643802.

It is an arithmetic number, because the mean of its divisors is an integer number (6851463264).

Almost surely, 2^205348774992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 205348774992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (274058530560).

205348774992 is an abundant number, since it is smaller than the sum of its proper divisors (342768286128).

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

205348774992 is a wasteful number, since it uses less digits than its factorization.

205348774992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131172 (or 131166 counting only the distinct ones).

The product of its (nonzero) digits is 30481920, while the sum is 60.

The spelling of 205348774992 in words is "two hundred five billion, three hundred forty-eight million, seven hundred seventy-four thousand, nine hundred ninety-two".