28784682270137 has 2 divisors, whose sum is σ = 28784682270138. Its totient is φ = 28784682270136.

The previous prime is 28784682270133. The next prime is 28784682270167. The reversal of 28784682270137 is 73107228648782.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26243530648336 + 2541151621801 = 5122844^2 + 1594099^2 .

It is a cyclic number.

It is not a de Polignac number, because 28784682270137 - 2² = 28784682270133 is a prime.

It is not a weakly prime, because it can be changed into another prime (28784682270133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14392341135068 + 14392341135069.

It is an arithmetic number, because the mean of its divisors is an integer number (14392341135069).

Almost surely, 2^{28784682270137} is an apocalyptic number.

It is an amenable number.

28784682270137 is a deficient number, since it is larger than the sum of its proper divisors (1).

28784682270137 is an equidigital number, since it uses as much as digits as its factorization.

28784682270137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 101154816, while the sum is 65.

The spelling of 28784682270137 in words is "twenty-eight trillion, seven hundred eighty-four billion, six hundred eighty-two million, two hundred seventy thousand, one hundred thirty-seven".