168130249728 has 176 divisors, whose sum is σ = 539103160320. Its totient is φ = 45508829184.

The previous prime is 168130249687. The next prime is 168130249753. The reversal of 168130249728 is 827942031861.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 202825 + ... + 614327.

Almost surely, 2^168130249728 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 168130249728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (269551580160).

168130249728 is an abundant number, since it is smaller than the sum of its proper divisors (370972910592).

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

168130249728 is a wasteful number, since it uses less digits than its factorization.

168130249728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411552 (or 411534 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 51.

The spelling of 168130249728 in words is "one hundred sixty-eight billion, one hundred thirty million, two hundred forty-nine thousand, seven hundred twenty-eight".