442717643685 has 32 divisors (see below), whose sum is σ = 746565644160. Its totient is φ = 223408136448.

The previous prime is 442717643663. The next prime is 442717643689. The reversal of 442717643685 is 586346717244.

It is not a de Polignac number, because 442717643685 - 2¹⁴ = 442717627301 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442717643689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 747382 + ... + 1201671.

It is an arithmetic number, because the mean of its divisors is an integer number (23330176380).

Almost surely, 2^442717643685 is an apocalyptic number.

It is an amenable number.

442717643685 is a deficient number, since it is larger than the sum of its proper divisors (303848000475).

442717643685 is a wasteful number, since it uses less digits than its factorization.

442717643685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1949877.

The product of its digits is 27095040, while the sum is 57.

The spelling of 442717643685 in words is "four hundred forty-two billion, seven hundred seventeen million, six hundred forty-three thousand, six hundred eighty-five".