400423456451441 has 2 divisors, whose sum is σ = 400423456451442. Its totient is φ = 400423456451440.

The previous prime is 400423456451377. The next prime is 400423456451449. The reversal of 400423456451441 is 144154654324004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 258517229697841 + 141906226753600 = 16078471^2 + 11912440^2 .

It is a cyclic number.

It is not a de Polignac number, because 400423456451441 - 2⁶ = 400423456451377 is a prime.

It is not a weakly prime, because it can be changed into another prime (400423456451449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200211728225720 + 200211728225721.

It is an arithmetic number, because the mean of its divisors is an integer number (200211728225721).

Almost surely, 2^{400423456451441} is an apocalyptic number.

It is an amenable number.

400423456451441 is a deficient number, since it is larger than the sum of its proper divisors (1).

400423456451441 is an equidigital number, since it uses as much as digits as its factorization.

400423456451441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3686400, while the sum is 47.

The spelling of 400423456451441 in words is "four hundred trillion, four hundred twenty-three billion, four hundred fifty-six million, four hundred fifty-one thousand, four hundred forty-one".