32728765897872 has 80 divisors (see below), whose sum is σ = 102484014442560. Its totient is φ = 9917807846400.

The previous prime is 32728765897859. The next prime is 32728765897937. The reversal of 32728765897872 is 27879856782723.

32728765897872 is a `hidden beast` number, since 3 + 2 + 7 + 28 + 7 + 6 + 589 + 7 + 8 + 7 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 32728765897791 and 32728765897800.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3443678529 + ... + 3443688032.

It is an arithmetic number, because the mean of its divisors is an integer number (1281050180532).

Almost surely, 2^{32728765897872} is an apocalyptic number.

It is an amenable number.

32728765897872 is an abundant number, since it is smaller than the sum of its proper divisors (69755248544688).

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

32728765897872 is a wasteful number, since it uses less digits than its factorization.

32728765897872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6887366589 (or 6887366577 counting only the distinct ones).

The product of its digits is 7965941760, while the sum is 81.

The spelling of 32728765897872 in words is "thirty-two trillion, seven hundred twenty-eight billion, seven hundred sixty-five million, eight hundred ninety-seven thousand, eight hundred seventy-two".