442516221578855 has 8 divisors (see below), whose sum is σ = 535718753204112. Its totient is φ = 350880119056768.

The previous prime is 442516221578773. The next prime is 442516221578857. The reversal of 442516221578855 is 558875122615244.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 442516221578855 - 2¹⁶ = 442516221513319 is a prime.

It is a super-2 number, since 2×442516221578855² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 442516221578791 and 442516221578800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442516221578857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 391607275169 + ... + 391607276298.

It is an arithmetic number, because the mean of its divisors is an integer number (66964844150514).

Almost surely, 2^{442516221578855} is an apocalyptic number.

442516221578855 is a deficient number, since it is larger than the sum of its proper divisors (93202531625257).

442516221578855 is a wasteful number, since it uses less digits than its factorization.

442516221578855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783214551585.

The product of its digits is 215040000, while the sum is 65.

The spelling of 442516221578855 in words is "four hundred forty-two trillion, five hundred sixteen billion, two hundred twenty-one million, five hundred seventy-eight thousand, eight hundred fifty-five".