28534669965 has 24 divisors (see below), whose sum is σ = 52063259040. Its totient is φ = 14417517024.

The previous prime is 28534669931. The next prime is 28534669981. The reversal of 28534669965 is 56996643582.

28534669965 is a `hidden beast` number, since 2 + 8 + 534 + 6 + 6 + 9 + 96 + 5 = 666.

It is not a de Polignac number, because 28534669965 - 2⁹ = 28534669453 is a prime.

It is a super-2 number, since 2×28534669965² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16686087 + ... + 16687796.

It is an arithmetic number, because the mean of its divisors is an integer number (2169302460).

Almost surely, 2^28534669965 is an apocalyptic number.

It is an amenable number.

28534669965 is a deficient number, since it is larger than the sum of its proper divisors (23528589075).

28534669965 is a wasteful number, since it uses less digits than its factorization.

28534669965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33373913 (or 33373910 counting only the distinct ones).

The product of its digits is 83980800, while the sum is 63.

The spelling of 28534669965 in words is "twenty-eight billion, five hundred thirty-four million, six hundred sixty-nine thousand, nine hundred sixty-five".