128827089723097 has 2 divisors, whose sum is σ = 128827089723098. Its totient is φ = 128827089723096.

The previous prime is 128827089723037. The next prime is 128827089723139. The reversal of 128827089723097 is 790327980728821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 112637700574281 + 16189389148816 = 10613091^2 + 4023604^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128827089723097 is a prime.

It is not a weakly prime, because it can be changed into another prime (128827089723037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64413544861548 + 64413544861549.

It is an arithmetic number, because the mean of its divisors is an integer number (64413544861549).

Almost surely, 2^{128827089723097} is an apocalyptic number.

It is an amenable number.

128827089723097 is a deficient number, since it is larger than the sum of its proper divisors (1).

128827089723097 is an equidigital number, since it uses as much as digits as its factorization.

128827089723097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 341397504, while the sum is 73.

The spelling of 128827089723097 in words is "one hundred twenty-eight trillion, eight hundred twenty-seven billion, eighty-nine million, seven hundred twenty-three thousand, ninety-seven".