28585016978480 has 20 divisors (see below), whose sum is σ = 66460164475152. Its totient is φ = 11434006791360.

The previous prime is 28585016978477. The next prime is 28585016978543. The reversal of 28585016978480 is 8487961058582.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-3 number, since 3×28585016978480³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178656356036 + ... + 178656356195.

Almost surely, 2^{28585016978480} is an apocalyptic number.

28585016978480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28585016978480 is an abundant number, since it is smaller than the sum of its proper divisors (37875147496672).

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

28585016978480 is a wasteful number, since it uses less digits than its factorization.

28585016978480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357312712244 (or 357312712238 counting only the distinct ones).

The product of its (nonzero) digits is 309657600, while the sum is 71.

The spelling of 28585016978480 in words is "twenty-eight trillion, five hundred eighty-five billion, sixteen million, nine hundred seventy-eight thousand, four hundred eighty".