128795764543469 has 2 divisors, whose sum is σ = 128795764543470. Its totient is φ = 128795764543468.

The previous prime is 128795764543421. The next prime is 128795764543513. The reversal of 128795764543469 is 964345467597821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90610656595369 + 38185107948100 = 9518963^2 + 6179410^2 .

It is an emirp because it is prime and its reverse (964345467597821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 128795764543469 - 2²⁴ = 128795747766253 is a prime.

It is a super-2 number, since 2×128795764543469² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 128795764543393 and 128795764543402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128795764542469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64397882271734 + 64397882271735.

It is an arithmetic number, because the mean of its divisors is an integer number (64397882271735).

Almost surely, 2^{128795764543469} is an apocalyptic number.

It is an amenable number.

128795764543469 is a deficient number, since it is larger than the sum of its proper divisors (1).

128795764543469 is an equidigital number, since it uses as much as digits as its factorization.

128795764543469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10973491200, while the sum is 80.

The spelling of 128795764543469 in words is "one hundred twenty-eight trillion, seven hundred ninety-five billion, seven hundred sixty-four million, five hundred forty-three thousand, four hundred sixty-nine".