4381721356522 has 8 divisors (see below), whose sum is σ = 6595806707136. Its totient is φ = 2183119120812.

The previous prime is 4381721356517. The next prime is 4381721356651. The reversal of 4381721356522 is 2256531271834.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3870778018 + ... + 3870779149.

It is an arithmetic number, because the mean of its divisors is an integer number (824475838392).

Almost surely, 2^{4381721356522} is an apocalyptic number.

4381721356522 is a deficient number, since it is larger than the sum of its proper divisors (2214085350614).

4381721356522 is a wasteful number, since it uses less digits than its factorization.

4381721356522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7741557452.

The product of its digits is 2419200, while the sum is 49.

The spelling of 4381721356522 in words is "four trillion, three hundred eighty-one billion, seven hundred twenty-one million, three hundred fifty-six thousand, five hundred twenty-two".