28663477436682 has 48 divisors (see below), whose sum is σ = 69028340198688. Its totient is φ = 8522017302240.

The previous prime is 28663477436593. The next prime is 28663477436707.

28663477436682 is a `hidden beast` number, since 2 + 8 + 6 + 63 + 4 + 77 + 436 + 68 + 2 = 666.

28663477436682 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 28663477436682.

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, 1365697408 + ... + 1365718395.

It is an arithmetic number, because the mean of its divisors is an integer number (1438090420806).

Almost surely, 2^{28663477436682} is an apocalyptic number.

28663477436682 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28663477436682 is an abundant number, since it is smaller than the sum of its proper divisors (40364862762006).

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

28663477436682 is a wasteful number, since it uses less digits than its factorization.

28663477436682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2731415875 (or 2731415872 counting only the distinct ones).

The product of its digits is 2341011456, while the sum is 72.

The spelling of 28663477436682 in words is "twenty-eight trillion, six hundred sixty-three billion, four hundred seventy-seven million, four hundred thirty-six thousand, six hundred eighty-two".