205594670780 has 12 divisors (see below), whose sum is σ = 431748808680. Its totient is φ = 82237868304.

The previous prime is 205594670693. The next prime is 205594670791. The reversal of 205594670780 is 87076495502.

It is a congruent number.

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, 5139866750 + ... + 5139866789.

It is an arithmetic number, because the mean of its divisors is an integer number (35979067390).

Almost surely, 2^205594670780 is an apocalyptic number.

205594670780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

205594670780 is an abundant number, since it is smaller than the sum of its proper divisors (226154137900).

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

205594670780 is a wasteful number, since it uses less digits than its factorization.

205594670780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10279733548 (or 10279733546 counting only the distinct ones).

The product of its (nonzero) digits is 4233600, while the sum is 53.

The spelling of 205594670780 in words is "two hundred five billion, five hundred ninety-four million, six hundred seventy thousand, seven hundred eighty".