205916747375920 has 40 divisors (see below), whose sum is σ = 547150214457504. Its totient is φ = 70600027671552.

The previous prime is 205916747375917. The next prime is 205916747375921. The reversal of 205916747375920 is 29573747619502.

205916747375920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (205916747375921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183854238169 + ... + 183854239288.

Almost surely, 2^{205916747375920} is an apocalyptic number.

205916747375920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

205916747375920 is an abundant number, since it is smaller than the sum of its proper divisors (341233467081584).

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

205916747375920 is a wasteful number, since it uses less digits than its factorization.

205916747375920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367708477477 (or 367708477471 counting only the distinct ones).

The product of its (nonzero) digits is 200037600, while the sum is 67.

The spelling of 205916747375920 in words is "two hundred five trillion, nine hundred sixteen billion, seven hundred forty-seven million, three hundred seventy-five thousand, nine hundred twenty".