28654045681 has 8 divisors (see below), whose sum is σ = 29024451200. Its totient is φ = 28283832720.

The previous prime is 28654045627. The next prime is 28654045691. The reversal of 28654045681 is 18654045682.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28654045681 - 2²⁷ = 28519827953 is a prime.

It is a super-2 number, since 2×28654045681² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28654045691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 264415 + ... + 356683.

It is an arithmetic number, because the mean of its divisors is an integer number (3628056400).

Almost surely, 2^28654045681 is an apocalyptic number.

It is an amenable number.

28654045681 is a deficient number, since it is larger than the sum of its proper divisors (370405519).

28654045681 is an equidigital number, since it uses as much as digits as its factorization.

28654045681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96279.

The product of its (nonzero) digits is 1843200, while the sum is 49.

Subtracting from 28654045681 its reverse (18654045682), we obtain a palindrome (9999999999).

The spelling of 28654045681 in words is "twenty-eight billion, six hundred fifty-four million, forty-five thousand, six hundred eighty-one".