28569961597698 has 24 divisors (see below), whose sum is σ = 62148203325936. Its totient is φ = 9485379015000.

The previous prime is 28569961597687. The next prime is 28569961597699. The reversal of 28569961597698 is 89679516996582.

28569961597698 is a `hidden beast` number, since 2 + 8 + 5 + 6 + 9 + 9 + 6 + 1 + 597 + 6 + 9 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (28569961597699) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3161788488 + ... + 3161797523.

It is an arithmetic number, because the mean of its divisors is an integer number (2589508471914).

Almost surely, 2^{28569961597698} is an apocalyptic number.

28569961597698 is an abundant number, since it is smaller than the sum of its proper divisors (33578241728238).

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

28569961597698 is a wasteful number, since it uses less digits than its factorization.

28569961597698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6323586270 (or 6323586267 counting only the distinct ones).

The product of its digits is 31744742400, while the sum is 90.

The spelling of 28569961597698 in words is "twenty-eight trillion, five hundred sixty-nine billion, nine hundred sixty-one million, five hundred ninety-seven thousand, six hundred ninety-eight".