442436703523 has 2 divisors, whose sum is σ = 442436703524. Its totient is φ = 442436703522.

The previous prime is 442436703503. The next prime is 442436703571. The reversal of 442436703523 is 325307634244.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 442436703523 - 2¹⁷ = 442436572451 is a prime.

It is a super-2 number, since 2×442436703523² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 442436703523.

It is not a weakly prime, because it can be changed into another prime (442436703503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221218351761 + 221218351762.

It is an arithmetic number, because the mean of its divisors is an integer number (221218351762).

Almost surely, 2^442436703523 is an apocalyptic number.

442436703523 is a deficient number, since it is larger than the sum of its proper divisors (1).

442436703523 is an equidigital number, since it uses as much as digits as its factorization.

442436703523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1451520, while the sum is 43.

The spelling of 442436703523 in words is "four hundred forty-two billion, four hundred thirty-six million, seven hundred three thousand, five hundred twenty-three".