442957662823 has 16 divisors (see below), whose sum is σ = 485748093600. Its totient is φ = 401430528000.

The previous prime is 442957662809. The next prime is 442957662827. The reversal of 442957662823 is 328266759244.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442957662823 is a prime.

It is a super-2 number, since 2×442957662823² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442957662827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 214323 + ... + 965323.

It is an arithmetic number, because the mean of its divisors is an integer number (30359255850).

Almost surely, 2^442957662823 is an apocalyptic number.

442957662823 is a deficient number, since it is larger than the sum of its proper divisors (42790430777).

442957662823 is a wasteful number, since it uses less digits than its factorization.

442957662823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 751842.

The product of its digits is 34836480, while the sum is 58.

The spelling of 442957662823 in words is "four hundred forty-two billion, nine hundred fifty-seven million, six hundred sixty-two thousand, eight hundred twenty-three".