442213551377 has 6 divisors (see below), whose sum is σ = 478846626822. Its totient is φ = 408197124192.

The previous prime is 442213551371. The next prime is 442213551383. The reversal of 442213551377 is 773155312244.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (442213551371) and next prime (442213551383).

It can be written as a sum of positive squares in 3 ways, for example, as 29688668416 + 412524882961 = 172304^2 + 642281^2 .

It is not a de Polignac number, because 442213551377 - 2⁴ = 442213551361 is a prime.

It is a super-2 number, since 2×442213551377² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442213551371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1308323948 + ... + 1308324285.

It is an arithmetic number, because the mean of its divisors is an integer number (79807771137).

Almost surely, 2^442213551377 is an apocalyptic number.

It is an amenable number.

442213551377 is a deficient number, since it is larger than the sum of its proper divisors (36633075445).

442213551377 is a wasteful number, since it uses less digits than its factorization.

442213551377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2616648259 (or 2616648246 counting only the distinct ones).

The product of its digits is 705600, while the sum is 44.

The spelling of 442213551377 in words is "four hundred forty-two billion, two hundred thirteen million, five hundred fifty-one thousand, three hundred seventy-seven".