28544103668 has 12 divisors (see below), whose sum is σ = 50419024992. Its totient is φ = 14138667960.

The previous prime is 28544103661. The next prime is 28544103671. The reversal of 28544103668 is 86630144582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28544103661) 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 3 ways as a sum of consecutive naturals, for example, 33345488 + ... + 33346343.

It is an arithmetic number, because the mean of its divisors is an integer number (4201585416).

Almost surely, 2^28544103668 is an apocalyptic number.

It is an amenable number.

28544103668 is a deficient number, since it is larger than the sum of its proper divisors (21874921324).

28544103668 is a wasteful number, since it uses less digits than its factorization.

28544103668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66691942 (or 66691940 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 47.

The spelling of 28544103668 in words is "twenty-eight billion, five hundred forty-four million, one hundred three thousand, six hundred sixty-eight".