400013663424959 has 2 divisors, whose sum is σ = 400013663424960. Its totient is φ = 400013663424958.

The previous prime is 400013663424919. The next prime is 400013663425067. The reversal of 400013663424959 is 959424366310004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 400013663424959 - 2⁸ = 400013663424703 is a prime.

It is a super-2 number, since 2×400013663424959² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400013663424919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200006831712479 + 200006831712480.

It is an arithmetic number, because the mean of its divisors is an integer number (200006831712480).

Almost surely, 2^{400013663424959} is an apocalyptic number.

400013663424959 is a deficient number, since it is larger than the sum of its proper divisors (1).

400013663424959 is an equidigital number, since it uses as much as digits as its factorization.

400013663424959 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16796160, while the sum is 56.

The spelling of 400013663424959 in words is "four hundred trillion, thirteen billion, six hundred sixty-three million, four hundred twenty-four thousand, nine hundred fifty-nine".