28543911372464 has 40 divisors (see below), whose sum is σ = 56654062376688. Its totient is φ = 13923524894720.

The previous prime is 28543911372443. The next prime is 28543911372517. The reversal of 28543911372464 is 46427311934582.

It is a happy number.

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, 28007159 + ... + 29008425.

Almost surely, 2^{28543911372464} is an apocalyptic number.

It is an amenable number.

28543911372464 is a deficient number, since it is larger than the sum of its proper divisors (28110151004224).

28543911372464 is a wasteful number, since it uses less digits than its factorization.

28543911372464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1044773 (or 1044767 counting only the distinct ones).

The product of its digits is 34836480, while the sum is 59.

The spelling of 28543911372464 in words is "twenty-eight trillion, five hundred forty-three billion, nine hundred eleven million, three hundred seventy-two thousand, four hundred sixty-four".