168618725748 has 108 divisors (see below), whose sum is σ = 468834153060. Its totient is φ = 51060303360.

The previous prime is 168618725719. The next prime is 168618725773. The reversal of 168618725748 is 847527816861.

It is a happy number.

168618725748 is a `hidden beast` number, since 1 + 6 + 8 + 618 + 7 + 2 + 5 + 7 + 4 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 25997692644 + 142621033104 = 161238^2 + 377652^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6473086 + ... + 6499082.

Almost surely, 2^168618725748 is an apocalyptic number.

168618725748 is a gapful number since it is divisible by the number (18) 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 168618725748, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (234417076530).

168618725748 is an abundant number, since it is smaller than the sum of its proper divisors (300215427312).

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

168618725748 is a wasteful number, since it uses less digits than its factorization.

168618725748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27518 (or 27502 counting only the distinct ones).

The product of its digits is 36126720, while the sum is 63.

The spelling of 168618725748 in words is "one hundred sixty-eight billion, six hundred eighteen million, seven hundred twenty-five thousand, seven hundred forty-eight".