28858132161646 has 32 divisors (see below), whose sum is σ = 45177093561600. Its totient is φ = 13808474023680.

The previous prime is 28858132161619. The next prime is 28858132161701. The reversal of 28858132161646 is 64616123185882.

It is a congruent number.

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, 1909695 + ... + 7833466.

It is an arithmetic number, because the mean of its divisors is an integer number (1411784173800).

Almost surely, 2^{28858132161646} is an apocalyptic number.

28858132161646 is a deficient number, since it is larger than the sum of its proper divisors (16318961399954).

28858132161646 is a wasteful number, since it uses less digits than its factorization.

28858132161646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9743644.

The product of its digits is 26542080, while the sum is 61.

The spelling of 28858132161646 in words is "twenty-eight trillion, eight hundred fifty-eight billion, one hundred thirty-two million, one hundred sixty-one thousand, six hundred forty-six".