28865571552464 has 80 divisors (see below), whose sum is σ = 57396859687296. Its totient is φ = 14058182668800.

The previous prime is 28865571552431. The next prime is 28865571552469. The reversal of 28865571552464 is 46425517556882.

It is a junction number, because it is equal to n+sod(n) for n = 28865571552394 and 28865571552403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28865571552469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 283064174 + ... + 283166130.

Almost surely, 2^{28865571552464} is an apocalyptic number.

It is an amenable number.

28865571552464 is a deficient number, since it is larger than the sum of its proper divisors (28531288134832).

28865571552464 is a wasteful number, since it uses less digits than its factorization.

28865571552464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104844 (or 104838 counting only the distinct ones).

The product of its digits is 645120000, while the sum is 68.

The spelling of 28865571552464 in words is "twenty-eight trillion, eight hundred sixty-five billion, five hundred seventy-one million, five hundred fifty-two thousand, four hundred sixty-four".