1720770913441 has 2 divisors, whose sum is σ = 1720770913442. Its totient is φ = 1720770913440.

The previous prime is 1720770913391. The next prime is 1720770913451. The reversal of 1720770913441 is 1443190770271.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1587348010000 + 133422903441 = 1259900^2 + 365271^2 .

It is an emirp because it is prime and its reverse (1443190770271) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1720770913441 is a prime.

It is a super-2 number, since 2×1720770913441² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1720770913391 and 1720770913400.

It is not a weakly prime, because it can be changed into another prime (1720770913451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 860385456720 + 860385456721.

It is an arithmetic number, because the mean of its divisors is an integer number (860385456721).

Almost surely, 2^{1720770913441} is an apocalyptic number.

It is an amenable number.

1720770913441 is a deficient number, since it is larger than the sum of its proper divisors (1).

1720770913441 is an equidigital number, since it uses as much as digits as its factorization.

1720770913441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 296352, while the sum is 46.

The spelling of 1720770913441 in words is "one trillion, seven hundred twenty billion, seven hundred seventy million, nine hundred thirteen thousand, four hundred forty-one".