442638053542819 has 2 divisors, whose sum is σ = 442638053542820. Its totient is φ = 442638053542818.

The previous prime is 442638053542753. The next prime is 442638053542877. The reversal of 442638053542819 is 918245350836244.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 442638053542819 - 2¹⁷ = 442638053411747 is a prime.

It is a super-3 number, since 3×442638053542819³ (a number of 45 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (442638053545819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221319026771409 + 221319026771410.

It is an arithmetic number, because the mean of its divisors is an integer number (221319026771410).

Almost surely, 2^{442638053542819} is an apocalyptic number.

442638053542819 is a deficient number, since it is larger than the sum of its proper divisors (1).

442638053542819 is an equidigital number, since it uses as much as digits as its factorization.

442638053542819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 199065600, while the sum is 64.

The spelling of 442638053542819 in words is "four hundred forty-two trillion, six hundred thirty-eight billion, fifty-three million, five hundred forty-two thousand, eight hundred nineteen".