8727789994560 has 2240 divisors, whose sum is σ = 39121382361600. Its totient is φ = 1798183452672.

The previous prime is 8727789994541. The next prime is 8727789994631. The reversal of 8727789994560 is 654999877278.

8727789994560 is a `hidden beast` number, since 8 + 7 + 2 + 7 + 78 + 9 + 99 + 456 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (2240).

It is a Harshad number since it is a multiple of its sum of digits (81).

It is a self number, because there is not a number n which added to its sum of digits gives 8727789994560.

It is an unprimeable number.

It is a polite number, since it can be written in 319 ways as a sum of consecutive naturals, for example, 21339339636 + ... + 21339340044.

It is an arithmetic number, because the mean of its divisors is an integer number (17464902840).

Almost surely, 2^{8727789994560} is an apocalyptic number.

8727789994560 is a gapful number since it is divisible by the number (80) 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 8727789994560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19560691180800).

8727789994560 is an abundant number, since it is smaller than the sum of its proper divisors (30393592367040).

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

8727789994560 is a wasteful number, since it uses less digits than its factorization.

8727789994560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650 (or 631 counting only the distinct ones).

The product of its (nonzero) digits is 3840721920, while the sum is 81.

The spelling of 8727789994560 in words is "eight trillion, seven hundred twenty-seven billion, seven hundred eighty-nine million, nine hundred ninety-four thousand, five hundred sixty".