28460656489 has 2 divisors, whose sum is σ = 28460656490. Its totient is φ = 28460656488.

The previous prime is 28460656457. The next prime is 28460656537. The reversal of 28460656489 is 98465606482.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27658350864 + 802305625 = 166308^2 + 28325^2 .

It is a cyclic number.

It is not a de Polignac number, because 28460656489 - 2⁵ = 28460656457 is a prime.

It is not a weakly prime, because it can be changed into another prime (28460656589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14230328244 + 14230328245.

It is an arithmetic number, because the mean of its divisors is an integer number (14230328245).

Almost surely, 2^28460656489 is an apocalyptic number.

It is an amenable number.

28460656489 is a deficient number, since it is larger than the sum of its proper divisors (1).

28460656489 is an equidigital number, since it uses as much as digits as its factorization.

28460656489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19906560, while the sum is 58.

The spelling of 28460656489 in words is "twenty-eight billion, four hundred sixty million, six hundred fifty-six thousand, four hundred eighty-nine".