168055398028 has 96 divisors (see below), whose sum is σ = 352469956608. Its totient is φ = 68550451200.

The previous prime is 168055398013. The next prime is 168055398037. The reversal of 168055398028 is 820893550861.

It is a self number, because there is not a number n which added to its sum of digits gives 168055398028.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 173790001 + ... + 173790967.

It is an arithmetic number, because the mean of its divisors is an integer number (3671562048).

Almost surely, 2^168055398028 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 168055398028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176234978304).

168055398028 is an abundant number, since it is smaller than the sum of its proper divisors (184414558580).

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

168055398028 is a wasteful number, since it uses less digits than its factorization.

168055398028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2063 (or 2061 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 55.

The spelling of 168055398028 in words is "one hundred sixty-eight billion, fifty-five million, three hundred ninety-eight thousand, twenty-eight".