27989404753 has 2 divisors, whose sum is σ = 27989404754. Its totient is φ = 27989404752.

The previous prime is 27989404747. The next prime is 27989404819. The reversal of 27989404753 is 35740498972.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27827911489 + 161493264 = 166817^2 + 12708^2 .

It is a cyclic number.

It is not a de Polignac number, because 27989404753 - 2⁵ = 27989404721 is a prime.

It is not a weakly prime, because it can be changed into another prime (27989404733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13994702376 + 13994702377.

It is an arithmetic number, because the mean of its divisors is an integer number (13994702377).

Almost surely, 2^27989404753 is an apocalyptic number.

It is an amenable number.

27989404753 is a deficient number, since it is larger than the sum of its proper divisors (1).

27989404753 is an equidigital number, since it uses as much as digits as its factorization.

27989404753 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15240960, while the sum is 58.

The spelling of 27989404753 in words is "twenty-seven billion, nine hundred eighty-nine million, four hundred four thousand, seven hundred fifty-three".