1705621606049 has 2 divisors, whose sum is σ = 1705621606050. Its totient is φ = 1705621606048.

The previous prime is 1705621606043. The next prime is 1705621606067. The reversal of 1705621606049 is 9406061265071.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1665049575424 + 40572030625 = 1290368^2 + 201425^2 .

It is an emirp because it is prime and its reverse (9406061265071) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1705621606049 - 2¹² = 1705621601953 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1705621605994 and 1705621606012.

It is not a weakly prime, because it can be changed into another prime (1705621606043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 852810803024 + 852810803025.

It is an arithmetic number, because the mean of its divisors is an integer number (852810803025).

Almost surely, 2^{1705621606049} is an apocalyptic number.

It is an amenable number.

1705621606049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1705621606049 is an equidigital number, since it uses as much as digits as its factorization.

1705621606049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 544320, while the sum is 47.

The spelling of 1705621606049 in words is "one trillion, seven hundred five billion, six hundred twenty-one million, six hundred six thousand, forty-nine".