402144444212 has 48 divisors (see below), whose sum is σ = 805875487872. Its totient is φ = 172007936640.

The previous prime is 402144444187. The next prime is 402144444241. The reversal of 402144444212 is 212444441204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40488887 + ... + 40498817.

It is an arithmetic number, because the mean of its divisors is an integer number (16789072664).

Almost surely, 2^402144444212 is an apocalyptic number.

It is an amenable number.

402144444212 is an abundant number, since it is smaller than the sum of its proper divisors (403731043660).

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

402144444212 is a wasteful number, since it uses less digits than its factorization.

402144444212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12648 (or 12646 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 32.

Adding to 402144444212 its reverse (212444441204), we get a palindrome (614588885416).

The spelling of 402144444212 in words is "four hundred two billion, one hundred forty-four million, four hundred forty-four thousand, two hundred twelve".