10661839135769 has 2 divisors, whose sum is σ = 10661839135770. Its totient is φ = 10661839135768.

The previous prime is 10661839135757. The next prime is 10661839135859. The reversal of 10661839135769 is 96753193816601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8714823559744 + 1947015576025 = 2952088^2 + 1395355^2 .

It is a cyclic number.

It is not a de Polignac number, because 10661839135769 - 2¹² = 10661839131673 is a prime.

It is a super-2 number, since 2×10661839135769² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10661839135069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5330919567884 + 5330919567885.

It is an arithmetic number, because the mean of its divisors is an integer number (5330919567885).

Almost surely, 2^{10661839135769} is an apocalyptic number.

It is an amenable number.

10661839135769 is a deficient number, since it is larger than the sum of its proper divisors (1).

10661839135769 is an equidigital number, since it uses as much as digits as its factorization.

10661839135769 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 44089920, while the sum is 65.

The spelling of 10661839135769 in words is "ten trillion, six hundred sixty-one billion, eight hundred thirty-nine million, one hundred thirty-five thousand, seven hundred sixty-nine".