28654045691 has 2 divisors, whose sum is σ = 28654045692. Its totient is φ = 28654045690.

The previous prime is 28654045627. The next prime is 28654045729. The reversal of 28654045691 is 19654045682.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28654045691 - 2⁶ = 28654045627 is a prime.

It is not a weakly prime, because it can be changed into another prime (28654045591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14327022845 + 14327022846.

It is an arithmetic number, because the mean of its divisors is an integer number (14327022846).

Almost surely, 2^28654045691 is an apocalyptic number.

28654045691 is a deficient number, since it is larger than the sum of its proper divisors (1).

28654045691 is an equidigital number, since it uses as much as digits as its factorization.

28654045691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2073600, while the sum is 50.

Subtracting from 28654045691 its reverse (19654045682), we obtain a palindrome (9000000009).

The spelling of 28654045691 in words is "twenty-eight billion, six hundred fifty-four million, forty-five thousand, six hundred ninety-one".