28513698369 has 32 divisors (see below), whose sum is σ = 41374744320. Its totient is φ = 17362038528.

The previous prime is 28513698349. The next prime is 28513698427. The reversal of 28513698369 is 96389631582.

It is not a de Polignac number, because 28513698369 - 2⁹ = 28513697857 is a prime.

It is a super-2 number, since 2×28513698369² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28513698349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6702247 + ... + 6706499.

It is an arithmetic number, because the mean of its divisors is an integer number (1292960760).

Almost surely, 2^28513698369 is an apocalyptic number.

It is an amenable number.

28513698369 is a deficient number, since it is larger than the sum of its proper divisors (12861045951).

28513698369 is a wasteful number, since it uses less digits than its factorization.

28513698369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6041.

The product of its digits is 16796160, while the sum is 60.

The spelling of 28513698369 in words is "twenty-eight billion, five hundred thirteen million, six hundred ninety-eight thousand, three hundred sixty-nine".