1105920663649 has 2 divisors, whose sum is σ = 1105920663650. Its totient is φ = 1105920663648.

The previous prime is 1105920663637. The next prime is 1105920663779. The reversal of 1105920663649 is 9463660295011.

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., 869780064400 + 236140599249 = 932620^2 + 485943^2 .

It is a cyclic number.

It is not a de Polignac number, because 1105920663649 - 2³¹ = 1103773180001 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1105920663596 and 1105920663605.

It is not a weakly prime, because it can be changed into another prime (1105920663619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 552960331824 + 552960331825.

It is an arithmetic number, because the mean of its divisors is an integer number (552960331825).

Almost surely, 2^{1105920663649} is an apocalyptic number.

It is an amenable number.

1105920663649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1105920663649 is an equidigital number, since it uses as much as digits as its factorization.

1105920663649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2099520, while the sum is 52.

The spelling of 1105920663649 in words is "one trillion, one hundred five billion, nine hundred twenty million, six hundred sixty-three thousand, six hundred forty-nine".