1306445051161 has 2 divisors, whose sum is σ = 1306445051162. Its totient is φ = 1306445051160.

The previous prime is 1306445051141. The next prime is 1306445051183. The reversal of 1306445051161 is 1611505446031.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1270219161600 + 36225889561 = 1127040^2 + 190331^2 .

It is a cyclic number.

It is not a de Polignac number, because 1306445051161 - 2⁵ = 1306445051129 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1306445051161.

It is not a weakly prime, because it can be changed into another prime (1306445051141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 653222525580 + 653222525581.

It is an arithmetic number, because the mean of its divisors is an integer number (653222525581).

Almost surely, 2^{1306445051161} is an apocalyptic number.

It is an amenable number.

1306445051161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1306445051161 is an equidigital number, since it uses as much as digits as its factorization.

1306445051161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43200, while the sum is 37.

The spelling of 1306445051161 in words is "one trillion, three hundred six billion, four hundred forty-five million, fifty-one thousand, one hundred sixty-one".