28652508122661 has 40 divisors (see below), whose sum is σ = 42993479304864. Its totient is φ = 19016183466720.

The previous prime is 28652508122653. The next prime is 28652508122677. The reversal of 28652508122661 is 16622180525682.

28652508122661 is a `hidden beast` number, since 2 + 8 + 6 + 5 + 2 + 508 + 122 + 6 + 6 + 1 = 666.

It is not a de Polignac number, because 28652508122661 - 2³ = 28652508122653 is a prime.

It is a super-3 number, since 3×28652508122661³ (a number of 41 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28652508122598 and 28652508122607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28652508122611) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 307770226 + ... + 307863308.

Almost surely, 2^{28652508122661} is an apocalyptic number.

It is an amenable number.

28652508122661 is a deficient number, since it is larger than the sum of its proper divisors (14340971182203).

28652508122661 is a wasteful number, since it uses less digits than its factorization.

28652508122661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110063 (or 110054 counting only the distinct ones).

The product of its (nonzero) digits is 5529600, while the sum is 54.

The spelling of 28652508122661 in words is "twenty-eight trillion, six hundred fifty-two billion, five hundred eight million, one hundred twenty-two thousand, six hundred sixty-one".