168154407792 has 180 divisors, whose sum is σ = 549727270560. Its totient is φ = 47842615296.

The previous prime is 168154407781. The next prime is 168154407797. The reversal of 168154407792 is 297704451861.

168154407792 is a `hidden beast` number, since 1 + 6 + 8 + 1 + 544 + 0 + 7 + 7 + 92 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168154407797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1636528 + ... + 1736240.

It is an arithmetic number, because the mean of its divisors is an integer number (3054040392).

Almost surely, 2^168154407792 is an apocalyptic number.

168154407792 is a gapful number since it is divisible by the number (12) 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 168154407792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (274863635280).

168154407792 is an abundant number, since it is smaller than the sum of its proper divisors (381572862768).

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

168154407792 is a wasteful number, since it uses less digits than its factorization.

168154407792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99980 (or 99964 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 54.

The spelling of 168154407792 in words is "one hundred sixty-eight billion, one hundred fifty-four million, four hundred seven thousand, seven hundred ninety-two".