1105641717421 has 2 divisors, whose sum is σ = 1105641717422. Its totient is φ = 1105641717420.

The previous prime is 1105641717407. The next prime is 1105641717449. The reversal of 1105641717421 is 1247171465011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 678201660900 + 427440056521 = 823530^2 + 653789^2 .

It is a cyclic number.

It is not a de Polignac number, because 1105641717421 - 2¹⁷ = 1105641586349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1105641717451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 552820858710 + 552820858711.

It is an arithmetic number, because the mean of its divisors is an integer number (552820858711).

Almost surely, 2^{1105641717421} is an apocalyptic number.

It is an amenable number.

1105641717421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1105641717421 is an equidigital number, since it uses as much as digits as its factorization.

1105641717421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47040, while the sum is 40.

The spelling of 1105641717421 in words is "one trillion, one hundred five billion, six hundred forty-one million, seven hundred seventeen thousand, four hundred twenty-one".