28563665913160 has 128 divisors (see below), whose sum is σ = 74280426624000. Its totient is φ = 9682473867264.

The previous prime is 28563665913151. The next prime is 28563665913161. The reversal of 28563665913160 is 6131956636582.

It is a super-2 number, since 2×28563665913160² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28563665913161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 393624961 + ... + 393697519.

It is an arithmetic number, because the mean of its divisors is an integer number (580315833000).

Almost surely, 2^{28563665913160} is an apocalyptic number.

28563665913160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28563665913160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37140213312000).

28563665913160 is an abundant number, since it is smaller than the sum of its proper divisors (45716760710840).

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

28563665913160 is a wasteful number, since it uses less digits than its factorization.

28563665913160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88463 (or 88459 counting only the distinct ones).

The product of its (nonzero) digits is 41990400, while the sum is 61.

The spelling of 28563665913160 in words is "twenty-eight trillion, five hundred sixty-three billion, six hundred sixty-five million, nine hundred thirteen thousand, one hundred sixty".