168579578678472 has 1152 divisors, whose sum is σ = 575717685903360. Its totient is φ = 44137378897920.

The previous prime is 168579578678411. The next prime is 168579578678477. The reversal of 168579578678472 is 274876875975861.

168579578678472 is a `hidden beast` number, since 1 + 6 + 8 + 5 + 7 + 9 + 5 + 78 + 67 + 8 + 472 = 666.

It is a super-2 number, since 2×168579578678472² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (168579578678477) by changing a digit.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 8293371973 + ... + 8293392299.

It is an arithmetic number, because the mean of its divisors is an integer number (499754935680).

Almost surely, 2^{168579578678472} is an apocalyptic number.

168579578678472 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 168579578678472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (287858842951680).

168579578678472 is an abundant number, since it is smaller than the sum of its proper divisors (407138107224888).

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

168579578678472 is a wasteful number, since it uses less digits than its factorization.

168579578678472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20483 (or 20459 counting only the distinct ones).

The product of its digits is 79659417600, while the sum is 90.

The spelling of 168579578678472 in words is "one hundred sixty-eight trillion, five hundred seventy-nine billion, five hundred seventy-eight million, six hundred seventy-eight thousand, four hundred seventy-two".