205740192170 has 16 divisors (see below), whose sum is σ = 375020098560. Its totient is φ = 81254354064.

The previous prime is 205740192143. The next prime is 205740192209. The reversal of 205740192170 is 71291047502.

It is a happy 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, 130214522 + ... + 130216101.

It is an arithmetic number, because the mean of its divisors is an integer number (23438756160).

Almost surely, 2^205740192170 is an apocalyptic number.

205740192170 is a deficient number, since it is larger than the sum of its proper divisors (169279906390).

205740192170 is a wasteful number, since it uses less digits than its factorization.

205740192170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260430709.

The product of its (nonzero) digits is 35280, while the sum is 38.

The spelling of 205740192170 in words is "two hundred five billion, seven hundred forty million, one hundred ninety-two thousand, one hundred seventy".