1626443456413 has 2 divisors, whose sum is σ = 1626443456414. Its totient is φ = 1626443456412.

The previous prime is 1626443456399. The next prime is 1626443456437. The reversal of 1626443456413 is 3146543446261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 898319153209 + 728124303204 = 947797^2 + 853302^2 .

It is a cyclic number.

It is not a de Polignac number, because 1626443456413 - 2²⁵ = 1626409901981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1626443156413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 813221728206 + 813221728207.

It is an arithmetic number, because the mean of its divisors is an integer number (813221728207).

Almost surely, 2^{1626443456413} is an apocalyptic number.

It is an amenable number.

1626443456413 is a deficient number, since it is larger than the sum of its proper divisors (1).

1626443456413 is an equidigital number, since it uses as much as digits as its factorization.

1626443456413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4976640, while the sum is 49.

The spelling of 1626443456413 in words is "one trillion, six hundred twenty-six billion, four hundred forty-three million, four hundred fifty-six thousand, four hundred thirteen".