1046640223549 has 2 divisors, whose sum is σ = 1046640223550. Its totient is φ = 1046640223548.

The previous prime is 1046640223501. The next prime is 1046640223561. The reversal of 1046640223549 is 9453220466401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1016783839449 + 29856384100 = 1008357^2 + 172790^2 .

It is a cyclic number.

It is not a de Polignac number, because 1046640223549 - 2²¹ = 1046638126397 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1046640223499 and 1046640223508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1046640223049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 523320111774 + 523320111775.

It is an arithmetic number, because the mean of its divisors is an integer number (523320111775).

Almost surely, 2^{1046640223549} is an apocalyptic number.

It is an amenable number.

1046640223549 is a deficient number, since it is larger than the sum of its proper divisors (1).

1046640223549 is an equidigital number, since it uses as much as digits as its factorization.

1046640223549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1244160, while the sum is 46.

The spelling of 1046640223549 in words is "one trillion, forty-six billion, six hundred forty million, two hundred twenty-three thousand, five hundred forty-nine".