205160450181 has 16 divisors (see below), whose sum is σ = 274371387264. Its totient is φ = 136361713664.

The previous prime is 205160450093. The next prime is 205160450197. The reversal of 205160450181 is 181054061502.

It is a cyclic number.

It is not a de Polignac number, because 205160450181 - 2²⁵ = 205126895749 is a prime.

It is a super-2 number, since 2×205160450181² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205160450681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7374760 + ... + 7402526.

It is an arithmetic number, because the mean of its divisors is an integer number (17148211704).

Almost surely, 2^205160450181 is an apocalyptic number.

It is an amenable number.

205160450181 is a deficient number, since it is larger than the sum of its proper divisors (69210937083).

205160450181 is a wasteful number, since it uses less digits than its factorization.

205160450181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35100.

The product of its (nonzero) digits is 9600, while the sum is 33.

The spelling of 205160450181 in words is "two hundred five billion, one hundred sixty million, four hundred fifty thousand, one hundred eighty-one".