128748680197 has 2 divisors, whose sum is σ = 128748680198. Its totient is φ = 128748680196.

The previous prime is 128748680167. The next prime is 128748680237. The reversal of 128748680197 is 791086847821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79839588481 + 48909091716 = 282559^2 + 221154^2 .

It is a cyclic number.

It is not a de Polignac number, because 128748680197 - 2¹⁵ = 128748647429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128748680117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64374340098 + 64374340099.

It is an arithmetic number, because the mean of its divisors is an integer number (64374340099).

Almost surely, 2^128748680197 is an apocalyptic number.

It is an amenable number.

128748680197 is a deficient number, since it is larger than the sum of its proper divisors (1).

128748680197 is an equidigital number, since it uses as much as digits as its factorization.

128748680197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10838016, while the sum is 61.

The spelling of 128748680197 in words is "one hundred twenty-eight billion, seven hundred forty-eight million, six hundred eighty thousand, one hundred ninety-seven".