675644161707601 has 2 divisors, whose sum is σ = 675644161707602. Its totient is φ = 675644161707600.

The previous prime is 675644161707563. The next prime is 675644161707643. The reversal of 675644161707601 is 106707161446576.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 635813926053201 + 39830235654400 = 25215351^2 + 6311120^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-675644161707601 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 675644161707601.

It is not a weakly prime, because it can be changed into another prime (675644161707661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 337822080853800 + 337822080853801.

It is an arithmetic number, because the mean of its divisors is an integer number (337822080853801).

Almost surely, 2^{675644161707601} is an apocalyptic number.

It is an amenable number.

675644161707601 is a deficient number, since it is larger than the sum of its proper divisors (1).

675644161707601 is an equidigital number, since it uses as much as digits as its factorization.

675644161707601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35562240, while the sum is 61.

The spelling of 675644161707601 in words is "six hundred seventy-five trillion, six hundred forty-four billion, one hundred sixty-one million, seven hundred seven thousand, six hundred one".