28947055374697 has 2 divisors, whose sum is σ = 28947055374698. Its totient is φ = 28947055374696.

The previous prime is 28947055374691. The next prime is 28947055374733. The reversal of 28947055374697 is 79647355074982.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26291625431296 + 2655429943401 = 5127536^2 + 1629549^2 .

It is a cyclic number.

It is not a de Polignac number, because 28947055374697 - 2³¹ = 28944907891049 is a prime.

It is not a weakly prime, because it can be changed into another prime (28947055374691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14473527687348 + 14473527687349.

It is an arithmetic number, because the mean of its divisors is an integer number (14473527687349).

Almost surely, 2^{28947055374697} is an apocalyptic number.

It is an amenable number.

28947055374697 is a deficient number, since it is larger than the sum of its proper divisors (1).

28947055374697 is an equidigital number, since it uses as much as digits as its factorization.

28947055374697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3200601600, while the sum is 76.

The spelling of 28947055374697 in words is "twenty-eight trillion, nine hundred forty-seven billion, fifty-five million, three hundred seventy-four thousand, six hundred ninety-seven".