440243099858591 has 2 divisors, whose sum is σ = 440243099858592. Its totient is φ = 440243099858590.

The previous prime is 440243099858539. The next prime is 440243099858647. The reversal of 440243099858591 is 195858990342044.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 440243099858591 - 2³⁴ = 440225919989407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (440243099858521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220121549929295 + 220121549929296.

It is an arithmetic number, because the mean of its divisors is an integer number (220121549929296).

Almost surely, 2^{440243099858591} is an apocalyptic number.

440243099858591 is a deficient number, since it is larger than the sum of its proper divisors (1).

440243099858591 is an equidigital number, since it uses as much as digits as its factorization.

440243099858591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 447897600, while the sum is 71.

The spelling of 440243099858591 in words is "four hundred forty trillion, two hundred forty-three billion, ninety-nine million, eight hundred fifty-eight thousand, five hundred ninety-one".