28757681806080 has 576 divisors, whose sum is σ = 97219180800000. Its totient is φ = 7224600231936.

The previous prime is 28757681806039. The next prime is 28757681806097. The reversal of 28757681806080 is 8060818675782.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 14386032921 + ... + 14386034919.

It is an arithmetic number, because the mean of its divisors is an integer number (168783300000).

Almost surely, 2^{28757681806080} is an apocalyptic number.

28757681806080 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 28757681806080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48609590400000).

28757681806080 is an abundant number, since it is smaller than the sum of its proper divisors (68461498993920).

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

28757681806080 is a wasteful number, since it uses less digits than its factorization.

28757681806080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3044 (or 3030 counting only the distinct ones).

The product of its (nonzero) digits is 72253440, while the sum is 66.

The spelling of 28757681806080 in words is "twenty-eight trillion, seven hundred fifty-seven billion, six hundred eighty-one million, eight hundred six thousand, eighty".