28661045668814 has 12 divisors (see below), whose sum is σ = 46553000214096. Its totient is φ = 13228174923912.

The previous prime is 28661045668771. The next prime is 28661045668867. The reversal of 28661045668814 is 41886654016682.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42397996214 + ... + 42397996889.

It is an arithmetic number, because the mean of its divisors is an integer number (3879416684508).

Almost surely, 2^{28661045668814} is an apocalyptic number.

28661045668814 is a deficient number, since it is larger than the sum of its proper divisors (17891954545282).

28661045668814 is a wasteful number, since it uses less digits than its factorization.

28661045668814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84795993131 (or 84795993118 counting only the distinct ones).

The product of its (nonzero) digits is 106168320, while the sum is 65.

The spelling of 28661045668814 in words is "twenty-eight trillion, six hundred sixty-one billion, forty-five million, six hundred sixty-eight thousand, eight hundred fourteen".