1045465663661 has 2 divisors, whose sum is σ = 1045465663662. Its totient is φ = 1045465663660.

The previous prime is 1045465663589. The next prime is 1045465663681. The reversal of 1045465663661 is 1663665645401.

1045465663661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 995417262436 + 50048401225 = 997706^2 + 223715^2 .

It is a cyclic number.

It is not a de Polignac number, because 1045465663661 - 2¹⁴ = 1045465647277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1045465663681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 522732831830 + 522732831831.

It is an arithmetic number, because the mean of its divisors is an integer number (522732831831).

Almost surely, 2^{1045465663661} is an apocalyptic number.

It is an amenable number.

1045465663661 is a deficient number, since it is larger than the sum of its proper divisors (1).

1045465663661 is an equidigital number, since it uses as much as digits as its factorization.

1045465663661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9331200, while the sum is 53.

The spelling of 1045465663661 in words is "one trillion, forty-five billion, four hundred sixty-five million, six hundred sixty-three thousand, six hundred sixty-one".