28523669967 has 64 divisors (see below), whose sum is σ = 46360782720. Its totient is φ = 17225395200.

The previous prime is 28523669959. The next prime is 28523669969. The reversal of 28523669967 is 76996632582.

28523669967 is a `hidden beast` number, since 285 + 236 + 69 + 9 + 67 = 666.

It is not a de Polignac number, because 28523669967 - 2³ = 28523669959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28523669969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11153853 + ... + 11156409.

It is an arithmetic number, because the mean of its divisors is an integer number (724387230).

Almost surely, 2^28523669967 is an apocalyptic number.

28523669967 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

28523669967 is a deficient number, since it is larger than the sum of its proper divisors (17837112753).

28523669967 is a wasteful number, since it uses less digits than its factorization.

28523669967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3161 (or 3155 counting only the distinct ones).

The product of its digits is 58786560, while the sum is 63.

The spelling of 28523669967 in words is "twenty-eight billion, five hundred twenty-three million, six hundred sixty-nine thousand, nine hundred sixty-seven".