351320021444 has 36 divisors (see below), whose sum is σ = 715451304960. Its totient is φ = 150510119760.

The previous prime is 351320021407. The next prime is 351320021449. The reversal of 351320021444 is 444120023153.

It is not an unprimeable number, because it can be changed into a prime (351320021449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 203309 + ... + 862539.

It is an arithmetic number, because the mean of its divisors is an integer number (19873647360).

Almost surely, 2^351320021444 is an apocalyptic number.

It is an amenable number.

351320021444 is an abundant number, since it is smaller than the sum of its proper divisors (364131283516).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

351320021444 is a wasteful number, since it uses less digits than its factorization.

351320021444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661968 (or 661959 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 351320021444 its reverse (444120023153), we get a palindrome (795440044597).

The spelling of 351320021444 in words is "three hundred fifty-one billion, three hundred twenty million, twenty-one thousand, four hundred forty-four".