28173801064 has 32 divisors (see below), whose sum is σ = 53672932800. Its totient is φ = 13862764800.

The previous prime is 28173801059. The next prime is 28173801077. The reversal of 28173801064 is 46010837182.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20272 + ... + 238240.

It is an arithmetic number, because the mean of its divisors is an integer number (1677279150).

Almost surely, 2^28173801064 is an apocalyptic number.

It is an amenable number.

28173801064 is a deficient number, since it is larger than the sum of its proper divisors (25499131736).

28173801064 is a wasteful number, since it uses less digits than its factorization.

28173801064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218233 (or 218229 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The spelling of 28173801064 in words is "twenty-eight billion, one hundred seventy-three million, eight hundred one thousand, sixty-four".