424444331381 has 8 divisors (see below), whose sum is σ = 485628596544. Its totient is φ = 363397406400.

The previous prime is 424444331351. The next prime is 424444331393. The reversal of 424444331381 is 183133444424.

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

It is not a de Polignac number, because 424444331381 - 2¹⁸ = 424444069237 is a prime.

It is a super-2 number, since 2×424444331381² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424444331321) 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, 34328420 + ... + 34340781.

It is an arithmetic number, because the mean of its divisors is an integer number (60703574568).

Almost surely, 2^424444331381 is an apocalyptic number.

It is an amenable number.

424444331381 is a deficient number, since it is larger than the sum of its proper divisors (61184265163).

424444331381 is an equidigital number, since it uses as much as digits as its factorization.

424444331381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68670091.

The product of its digits is 442368, while the sum is 41.

The spelling of 424444331381 in words is "four hundred twenty-four billion, four hundred forty-four million, three hundred thirty-one thousand, three hundred eighty-one".