161675020160 has 128 divisors (see below), whose sum is σ = 392491707840. Its totient is φ = 63670763520.

The previous prime is 161675020141. The next prime is 161675020163. The reversal of 161675020160 is 61020576161.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×161675020160² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 161675020160.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161675020163) 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, 39848852 + ... + 39852908.

Almost surely, 2^161675020160 is an apocalyptic number.

161675020160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161675020160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (196245853920).

161675020160 is an abundant number, since it is smaller than the sum of its proper divisors (230816687680).

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

161675020160 is an equidigital number, since it uses as much as digits as its factorization.

161675020160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5024 (or 5012 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 35.

The spelling of 161675020160 in words is "one hundred sixty-one billion, six hundred seventy-five million, twenty thousand, one hundred sixty".