440123156225957 has 2 divisors, whose sum is σ = 440123156225958. Its totient is φ = 440123156225956.

The previous prime is 440123156225947. The next prime is 440123156226049. The reversal of 440123156225957 is 759522651321044.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 222809388093601 + 217313768132356 = 14926801^2 + 14741566^2 .

It is a cyclic number.

It is not a de Polignac number, because 440123156225957 - 2⁴ = 440123156225941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (440123156225947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220061578112978 + 220061578112979.

It is an arithmetic number, because the mean of its divisors is an integer number (220061578112979).

Almost surely, 2^{440123156225957} is an apocalyptic number.

It is an amenable number.

440123156225957 is a deficient number, since it is larger than the sum of its proper divisors (1).

440123156225957 is an equidigital number, since it uses as much as digits as its factorization.

440123156225957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144000, while the sum is 56.

The spelling of 440123156225957 in words is "four hundred forty trillion, one hundred twenty-three billion, one hundred fifty-six million, two hundred twenty-five thousand, nine hundred fifty-seven".