442887362865 has 24 divisors (see below), whose sum is σ = 767690674920. Its totient is φ = 236200671744.

The previous prime is 442887362807. The next prime is 442887362947. The reversal of 442887362865 is 568263788244.

442887362865 is a `hidden beast` number, since 4 + 4 + 288 + 73 + 6 + 286 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 50581809216 + 392305553649 = 224904^2 + 626343^2 .

It is not a de Polignac number, because 442887362865 - 2⁹ = 442887362353 is a prime.

It is a super-2 number, since 2×442887362865² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 2153131 + ... + 2349839.

It is an arithmetic number, because the mean of its divisors is an integer number (31987111455).

Almost surely, 2^442887362865 is an apocalyptic number.

442887362865 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

442887362865 is a deficient number, since it is larger than the sum of its proper divisors (324803312055).

442887362865 is a wasteful number, since it uses less digits than its factorization.

442887362865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246753 (or 246750 counting only the distinct ones).

The product of its digits is 123863040, while the sum is 63.

The spelling of 442887362865 in words is "four hundred forty-two billion, eight hundred eighty-seven million, three hundred sixty-two thousand, eight hundred sixty-five".