3260720334689 has 2 divisors, whose sum is σ = 3260720334690. Its totient is φ = 3260720334688.

The previous prime is 3260720334617. The next prime is 3260720334719. The reversal of 3260720334689 is 9864330270623.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1897208721664 + 1363511613025 = 1377392^2 + 1167695^2 .

It is an emirp because it is prime and its reverse (9864330270623) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3260720334689 - 2¹⁶ = 3260720269153 is a prime.

It is a super-4 number, since 4×3260720334689⁴ (a number of 51 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3260720334689.

It is not a weakly prime, because it can be changed into another prime (3260720334589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1630360167344 + 1630360167345.

It is an arithmetic number, because the mean of its divisors is an integer number (1630360167345).

Almost surely, 2^{3260720334689} is an apocalyptic number.

It is an amenable number.

3260720334689 is a deficient number, since it is larger than the sum of its proper divisors (1).

3260720334689 is an equidigital number, since it uses as much as digits as its factorization.

3260720334689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7838208, while the sum is 53.

The spelling of 3260720334689 in words is "three trillion, two hundred sixty billion, seven hundred twenty million, three hundred thirty-four thousand, six hundred eighty-nine".