28248260641 has 2 divisors, whose sum is σ = 28248260642. Its totient is φ = 28248260640.

The previous prime is 28248260629. The next prime is 28248260669. The reversal of 28248260641 is 14606284282.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26069331600 + 2178929041 = 161460^2 + 46679^2 .

It is a cyclic number.

It is not a de Polignac number, because 28248260641 - 2¹¹ = 28248258593 is a prime.

It is not a weakly prime, because it can be changed into another prime (28248261641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14124130320 + 14124130321.

It is an arithmetic number, because the mean of its divisors is an integer number (14124130321).

Almost surely, 2^28248260641 is an apocalyptic number.

It is an amenable number.

28248260641 is a deficient number, since it is larger than the sum of its proper divisors (1).

28248260641 is an equidigital number, since it uses as much as digits as its factorization.

28248260641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 294912, while the sum is 43.

The spelling of 28248260641 in words is "twenty-eight billion, two hundred forty-eight million, two hundred sixty thousand, six hundred forty-one".