165628198170 has 40 divisors (see below), whose sum is σ = 445355823924. Its totient is φ = 44167519296.

The previous prime is 165628198121. The next prime is 165628198181. The reversal of 165628198170 is 71891826561.

It is a happy number.

165628198170 is a `hidden beast` number, since 1 + 6 + 5 + 628 + 1 + 9 + 8 + 1 + 7 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 160739251929 + 4888946241 = 400923^2 + 69921^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 102238819 + ... + 102240438.

Almost surely, 2^165628198170 is an apocalyptic number.

165628198170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165628198170 is an abundant number, since it is smaller than the sum of its proper divisors (279727625754).

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

165628198170 is a wasteful number, since it uses less digits than its factorization.

165628198170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204479276 (or 204479267 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 54.

The spelling of 165628198170 in words is "one hundred sixty-five billion, six hundred twenty-eight million, one hundred ninety-eight thousand, one hundred seventy".