205720757216 has 24 divisors (see below), whose sum is σ = 436167567864. Its totient is φ = 94948041600.

The previous prime is 205720757201. The next prime is 205720757237. The reversal of 205720757216 is 612757027502.

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, 247260110 + ... + 247260941.

It is an arithmetic number, because the mean of its divisors is an integer number (18173648661).

Almost surely, 2^205720757216 is an apocalyptic number.

205720757216 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

205720757216 is an abundant number, since it is smaller than the sum of its proper divisors (230446810648).

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

205720757216 is a wasteful number, since it uses less digits than its factorization.

205720757216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494521074 (or 494521066 counting only the distinct ones).

The product of its (nonzero) digits is 411600, while the sum is 44.

The spelling of 205720757216 in words is "two hundred five billion, seven hundred twenty million, seven hundred fifty-seven thousand, two hundred sixteen".