128710532509969 has 2 divisors, whose sum is σ = 128710532509970. Its totient is φ = 128710532509968.

The previous prime is 128710532509847. The next prime is 128710532509981. The reversal of 128710532509969 is 969905235017821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106933488948225 + 21777043561744 = 10340865^2 + 4666588^2 .

It is a cyclic number.

It is not a de Polignac number, because 128710532509969 - 2⁹ = 128710532509457 is a prime.

It is a super-2 number, since 2×128710532509969² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (128710532500969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64355266254984 + 64355266254985.

It is an arithmetic number, because the mean of its divisors is an integer number (64355266254985).

Almost surely, 2^{128710532509969} is an apocalyptic number.

It is an amenable number.

128710532509969 is a deficient number, since it is larger than the sum of its proper divisors (1).

128710532509969 is an equidigital number, since it uses as much as digits as its factorization.

128710532509969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 73483200, while the sum is 67.

The spelling of 128710532509969 in words is "one hundred twenty-eight trillion, seven hundred ten billion, five hundred thirty-two million, five hundred nine thousand, nine hundred sixty-nine".