28638540183636 has 48 divisors (see below), whose sum is σ = 74250797380480. Its totient is φ = 9545829030720.

The previous prime is 28638540183613. The next prime is 28638540183653. The reversal of 28638540183636 is 63638104583682.

28638540183636 is a `hidden beast` number, since 2 + 8 + 6 + 3 + 8 + 540 + 1 + 83 + 6 + 3 + 6 = 666.

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, 1916521 + ... + 7807056.

Almost surely, 2^{28638540183636} is an apocalyptic number.

It is an amenable number.

28638540183636 is an abundant number, since it is smaller than the sum of its proper divisors (45612257196844).

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

28638540183636 is a wasteful number, since it uses less digits than its factorization.

28638540183636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9750861 (or 9750853 counting only the distinct ones).

The product of its (nonzero) digits is 119439360, while the sum is 63.

The spelling of 28638540183636 in words is "twenty-eight trillion, six hundred thirty-eight billion, five hundred forty million, one hundred eighty-three thousand, six hundred thirty-six".