402221662444 has 48 divisors (see below), whose sum is σ = 820969128000. Its totient is φ = 172357909248.

The previous prime is 402221662421. The next prime is 402221662457. The reversal of 402221662444 is 444266122204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14102262 + ... + 14130754.

It is an arithmetic number, because the mean of its divisors is an integer number (17103523500).

Almost surely, 2^402221662444 is an apocalyptic number.

It is an amenable number.

402221662444 is an abundant number, since it is smaller than the sum of its proper divisors (418747465556).

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

402221662444 is a wasteful number, since it uses less digits than its factorization.

402221662444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38807 (or 38791 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 37.

Adding to 402221662444 its reverse (444266122204), we get a palindrome (846487784648).

The spelling of 402221662444 in words is "four hundred two billion, two hundred twenty-one million, six hundred sixty-two thousand, four hundred forty-four".