165979613170 has 64 divisors (see below), whose sum is σ = 353035892736. Its totient is φ = 54981296640.

The previous prime is 165979613161. The next prime is 165979613179. The reversal of 165979613170 is 71316979561.

It is an interprime number because it is at equal distance from previous prime (165979613161) and next prime (165979613179).

It is not an unprimeable number, because it can be changed into a prime (165979613179) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1267822 + ... + 1392598.

It is an arithmetic number, because the mean of its divisors is an integer number (5516185824).

Almost surely, 2^165979613170 is an apocalyptic number.

165979613170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165979613170 is an abundant number, since it is smaller than the sum of its proper divisors (187056279566).

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

165979613170 is a wasteful number, since it uses less digits than its factorization.

165979613170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125435.

The product of its (nonzero) digits is 2143260, while the sum is 55.

The spelling of 165979613170 in words is "one hundred sixty-five billion, nine hundred seventy-nine million, six hundred thirteen thousand, one hundred seventy".