43644631456463 has 2 divisors, whose sum is σ = 43644631456464. Its totient is φ = 43644631456462.

The previous prime is 43644631456379. The next prime is 43644631456471. The reversal of 43644631456463 is 36465413644634.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 43644631456463 - 2²⁶ = 43644564347599 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43644631452463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21822315728231 + 21822315728232.

It is an arithmetic number, because the mean of its divisors is an integer number (21822315728232).

Almost surely, 2^{43644631456463} is an apocalyptic number.

43644631456463 is a deficient number, since it is larger than the sum of its proper divisors (1).

43644631456463 is an equidigital number, since it uses as much as digits as its factorization.

43644631456463 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 179159040, while the sum is 59.

The spelling of 43644631456463 in words is "forty-three trillion, six hundred forty-four billion, six hundred thirty-one million, four hundred fifty-six thousand, four hundred sixty-three".