205085040630 has 16 divisors (see below), whose sum is σ = 492204097584. Its totient is φ = 54689344160.

The previous prime is 205085040617. The next prime is 205085040653. The reversal of 205085040630 is 36040580502.

It is a junction number, because it is equal to n+sod(n) for n = 205085040591 and 205085040600.

It is a congruent number.

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, 3418083981 + ... + 3418084040.

It is an arithmetic number, because the mean of its divisors is an integer number (30762756099).

Almost surely, 2^205085040630 is an apocalyptic number.

205085040630 is an abundant number, since it is smaller than the sum of its proper divisors (287119056954).

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

205085040630 is a wasteful number, since it uses less digits than its factorization.

205085040630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6836168031.

The product of its (nonzero) digits is 28800, while the sum is 33.

The spelling of 205085040630 in words is "two hundred five billion, eighty-five million, forty thousand, six hundred thirty".