28161585549696 has 32 divisors (see below), whose sum is σ = 74804211617400. Its totient is φ = 9387195183104.

The previous prime is 28161585549653. The next prime is 28161585549731. The reversal of 28161585549696 is 69694558516182.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 36668730801 + ... + 36668731568.

Almost surely, 2^{28161585549696} is an apocalyptic number.

It is an amenable number.

28161585549696 is an abundant number, since it is smaller than the sum of its proper divisors (46642626067704).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28161585549696 is an equidigital number, since it uses as much as digits as its factorization.

28161585549696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73337462386 (or 73337462374 counting only the distinct ones).

The product of its digits is 1119744000, while the sum is 75.

The spelling of 28161585549696 in words is "twenty-eight trillion, one hundred sixty-one billion, five hundred eighty-five million, five hundred forty-nine thousand, six hundred ninety-six".