28712718512 has 20 divisors (see below), whose sum is σ = 55683258960. Its totient is φ = 14342845248.

The previous prime is 28712718493. The next prime is 28712718521. The reversal of 28712718512 is 21581721782.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 827087 + ... + 861102.

It is an arithmetic number, because the mean of its divisors is an integer number (2784162948).

Almost surely, 2^28712718512 is an apocalyptic number.

It is an amenable number.

28712718512 is a deficient number, since it is larger than the sum of its proper divisors (26970540448).

28712718512 is a wasteful number, since it uses less digits than its factorization.

28712718512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1689260 (or 1689254 counting only the distinct ones).

The product of its digits is 125440, while the sum is 44.

The spelling of 28712718512 in words is "twenty-eight billion, seven hundred twelve million, seven hundred eighteen thousand, five hundred twelve".