442268164799 has 4 divisors (see below), whose sum is σ = 444251430336. Its totient is φ = 440284899264.

The previous prime is 442268164787. The next prime is 442268164801. The reversal of 442268164799 is 997461862244.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442268164799 is a prime.

It is a super-2 number, since 2×442268164799² (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 (442268164699) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 991632434 + ... + 991632879.

It is an arithmetic number, because the mean of its divisors is an integer number (111062857584).

Almost surely, 2^442268164799 is an apocalyptic number.

442268164799 is a deficient number, since it is larger than the sum of its proper divisors (1983265537).

442268164799 is a wasteful number, since it uses less digits than its factorization.

442268164799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1983265536.

The product of its digits is 41803776, while the sum is 62.

The spelling of 442268164799 in words is "four hundred forty-two billion, two hundred sixty-eight million, one hundred sixty-four thousand, seven hundred ninety-nine".