402144441412 has 24 divisors (see below), whose sum is σ = 805259120960. Its totient is φ = 172139709600.

The previous prime is 402144441397. The next prime is 402144441539. The reversal of 402144441412 is 214144441204.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8639214 + ... + 8685637.

Almost surely, 2^402144441412 is an apocalyptic number.

It is an amenable number.

402144441412 is an abundant number, since it is smaller than the sum of its proper divisors (403114679548).

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

402144441412 is a wasteful number, since it uses less digits than its factorization.

402144441412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17325691 (or 17325689 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 31.

Adding to 402144441412 its reverse (214144441204), we get a palindrome (616288882616).

The spelling of 402144441412 in words is "four hundred two billion, one hundred forty-four million, four hundred forty-one thousand, four hundred twelve".