402144443244 has 18 divisors (see below), whose sum is σ = 1016531787180. Its totient is φ = 134048147736.

The previous prime is 402144443231. The next prime is 402144443273. The reversal of 402144443244 is 442344441204.

It is a happy number.

402144443244 is a `hidden beast` number, since 4 + 0 + 214 + 4 + 4 + 432 + 4 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 11170678979 = 402144443244 / (4 + 0 + 2 + 1 + 4 + 4 + 4 + 4 + 3 + 2 + 4 + 4).

It is a junction number, because it is equal to n+sod(n) for n = 402144443199 and 402144443208.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5585339454 + ... + 5585339525.

Almost surely, 2^402144443244 is an apocalyptic number.

It is an amenable number.

402144443244 is an abundant number, since it is smaller than the sum of its proper divisors (614387343936).

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

402144443244 is a wasteful number, since it uses less digits than its factorization.

402144443244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11170678989 (or 11170678984 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 36.

Adding to 402144443244 its reverse (442344441204), we get a palindrome (844488884448).

The spelling of 402144443244 in words is "four hundred two billion, one hundred forty-four million, four hundred forty-three thousand, two hundred forty-four".