8978581724672 has 320 divisors, whose sum is σ = 22583518848000. Its totient is φ = 3553695129600.

The previous prime is 8978581724657. The next prime is 8978581724767. The reversal of 8978581724672 is 2764271858798.

It is a super-2 number, since 2×8978581724672² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8978581724672.

It is a congruent number.

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, 117097547 + ... + 117174197.

It is an arithmetic number, because the mean of its divisors is an integer number (70573496400).

Almost surely, 2^{8978581724672} 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 8978581724672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11291759424000).

8978581724672 is an abundant number, since it is smaller than the sum of its proper divisors (13604937123328).

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

8978581724672 is an equidigital number, since it uses as much as digits as its factorization.

8978581724672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76742 (or 76712 counting only the distinct ones).

The product of its digits is 758661120, while the sum is 74.

The spelling of 8978581724672 in words is "eight trillion, nine hundred seventy-eight billion, five hundred eighty-one million, seven hundred twenty-four thousand, six hundred seventy-two".