16168420160 has 56 divisors (see below), whose sum is σ = 38622747240. Its totient is φ = 6446925824.

The previous prime is 16168420097. The next prime is 16168420181. The reversal of 16168420160 is 6102486161.

It can be written as a sum of positive squares in 4 ways, for example, as 1370184256 + 14798235904 = 37016^2 + 121648^2 .

It is a super-2 number, since 2×16168420160² (a number of 21 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 16168420160.

It is a congruent 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, 21746 + ... + 181134.

It is an arithmetic number, because the mean of its divisors is an integer number (689691915).

Almost surely, 2^16168420160 is an apocalyptic number.

16168420160 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 16168420160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19311373620).

16168420160 is an abundant number, since it is smaller than the sum of its proper divisors (22454327080).

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

16168420160 is a wasteful number, since it uses less digits than its factorization.

16168420160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159723 (or 159713 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The spelling of 16168420160 in words is "sixteen billion, one hundred sixty-eight million, four hundred twenty thousand, one hundred sixty".