205828987944 has 32 divisors (see below), whose sum is σ = 523008087840. Its totient is φ = 67484913600.

The previous prime is 205828987909. The next prime is 205828988009. The reversal of 205828987944 is 449789828502.

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, 70295322 + ... + 70298249.

It is an arithmetic number, because the mean of its divisors is an integer number (16344002745).

Almost surely, 2^205828987944 is an apocalyptic number.

205828987944 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

205828987944 is an abundant number, since it is smaller than the sum of its proper divisors (317179099896).

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

205828987944 is a wasteful number, since it uses less digits than its factorization.

205828987944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140593641 (or 140593637 counting only the distinct ones).

The product of its (nonzero) digits is 92897280, while the sum is 66.

The spelling of 205828987944 in words is "two hundred five billion, eight hundred twenty-eight million, nine hundred eighty-seven thousand, nine hundred forty-four".