402664020244 has 12 divisors (see below), whose sum is σ = 704717001268. Its totient is φ = 201316305600.

The previous prime is 402664020221. The next prime is 402664020413. The reversal of 402664020244 is 442020466204.

It can be written as a sum of positive squares in 2 ways, for example, as 109779568900 + 292884451344 = 331330^2 + 541188^2 .

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3868347 + ... + 3971074.

Almost surely, 2^402664020244 is an apocalyptic number.

It is an amenable number.

402664020244 is a deficient number, since it is larger than the sum of its proper divisors (302052981024).

402664020244 is a wasteful number, since it uses less digits than its factorization.

402664020244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7852266 (or 7852264 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 34.

Adding to 402664020244 its reverse (442020466204), we get a palindrome (844684486448).

The spelling of 402664020244 in words is "four hundred two billion, six hundred sixty-four million, twenty thousand, two hundred forty-four".