28718599680000 has 520 divisors, whose sum is σ = 106318423151600. Its totient is φ = 7658274816000.

The previous prime is 28718599679969. The next prime is 28718599680073. The reversal of 28718599680000 is 8699581782.

It is a happy number.

28718599680000 is a `hidden beast` number, since 28 + 7 + 18 + 599 + 6 + 8 + 0 + 0 + 0 + 0 = 666.

It is a super-2 number, since 2×28718599680000² (a number of 28 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 28718599680000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 68912256 + ... + 69327744.

Almost surely, 2^{28718599680000} is an apocalyptic number.

28718599680000 is a gapful number since it is divisible by the number (20) 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 28718599680000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53159211575800).

28718599680000 is an abundant number, since it is smaller than the sum of its proper divisors (77599823471600).

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

28718599680000 is an frugal number, since it uses more digits than its factorization.

28718599680000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415542 (or 415499 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 63.

The spelling of 28718599680000 in words is "twenty-eight trillion, seven hundred eighteen billion, five hundred ninety-nine million, six hundred eighty thousand".