442113779810 has 16 divisors (see below), whose sum is σ = 842616851256. Its totient is φ = 166442834688.

The previous prime is 442113779803. The next prime is 442113779869. The reversal of 442113779810 is 18977311244.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 441107177281 + 1006602529 = 664159^2 + 31727^2 .

It is a super-2 number, since 2×442113779810² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1300334477 + ... + 1300334816.

Almost surely, 2^442113779810 is an apocalyptic number.

442113779810 is a deficient number, since it is larger than the sum of its proper divisors (400503071446).

442113779810 is a wasteful number, since it uses less digits than its factorization.

442113779810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2600669317.

The product of its (nonzero) digits is 338688, while the sum is 47.

The spelling of 442113779810 in words is "four hundred forty-two billion, one hundred thirteen million, seven hundred seventy-nine thousand, eight hundred ten".