28714448657 has 2 divisors, whose sum is σ = 28714448658. Its totient is φ = 28714448656.

The previous prime is 28714448617. The next prime is 28714448663. The reversal of 28714448657 is 75684441782.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17163358081 + 11551090576 = 131009^2 + 107476^2 .

It is a cyclic number.

It is not a de Polignac number, because 28714448657 - 2¹⁶ = 28714383121 is a prime.

It is not a weakly prime, because it can be changed into another prime (28714448617) 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 as a sum of consecutive naturals, namely, 14357224328 + 14357224329.

It is an arithmetic number, because the mean of its divisors is an integer number (14357224329).

Almost surely, 2^28714448657 is an apocalyptic number.

It is an amenable number.

28714448657 is a deficient number, since it is larger than the sum of its proper divisors (1).

28714448657 is an equidigital number, since it uses as much as digits as its factorization.

28714448657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12042240, while the sum is 56.

The spelling of 28714448657 in words is "twenty-eight billion, seven hundred fourteen million, four hundred forty-eight thousand, six hundred fifty-seven".