442321526131663 has 8 divisors (see below), whose sum is σ = 453301194372048. Its totient is φ = 431373363396864.

The previous prime is 442321526131651. The next prime is 442321526131673. The reversal of 442321526131663 is 366131625123244.

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

It is a de Polignac number, because none of the positive numbers 2^k-442321526131663 is a prime.

It is a super-2 number, since 2×442321526131663² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442321526131633) 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, 7876347970 + ... + 7876404127.

It is an arithmetic number, because the mean of its divisors is an integer number (56662649296506).

Almost surely, 2^{442321526131663} is an apocalyptic number.

442321526131663 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

442321526131663 is a deficient number, since it is larger than the sum of its proper divisors (10979668240385).

442321526131663 is a wasteful number, since it uses less digits than its factorization.

442321526131663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15752752793.

The product of its digits is 3732480, while the sum is 49.

The spelling of 442321526131663 in words is "four hundred forty-two trillion, three hundred twenty-one billion, five hundred twenty-six million, one hundred thirty-one thousand, six hundred sixty-three".