442350823693 has 2 divisors, whose sum is σ = 442350823694. Its totient is φ = 442350823692.

The previous prime is 442350823669. The next prime is 442350823697. The reversal of 442350823693 is 396328053244.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 253197156969 + 189153666724 = 503187^2 + 434918^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442350823693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442350823697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221175411846 + 221175411847.

It is an arithmetic number, because the mean of its divisors is an integer number (221175411847).

Almost surely, 2^442350823693 is an apocalyptic number.

It is an amenable number.

442350823693 is a deficient number, since it is larger than the sum of its proper divisors (1).

442350823693 is an equidigital number, since it uses as much as digits as its factorization.

442350823693 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3732480, while the sum is 49.

The spelling of 442350823693 in words is "four hundred forty-two billion, three hundred fifty million, eight hundred twenty-three thousand, six hundred ninety-three".