1326122003646 has 48 divisors (see below), whose sum is σ = 3136456028160. Its totient is φ = 401600558160.

The previous prime is 1326122003623. The next prime is 1326122003653. The reversal of 1326122003646 is 6463002216231.

1326122003646 is a `hidden beast` number, since 1 + 3 + 2 + 6 + 1 + 2 + 2 + 0 + 0 + 3 + 646 = 666.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1326122003646.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1808190 + ... + 2433473.

It is an arithmetic number, because the mean of its divisors is an integer number (65342833920).

Almost surely, 2^{1326122003646} is an apocalyptic number.

1326122003646 is an abundant number, since it is smaller than the sum of its proper divisors (1810334024514).

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

1326122003646 is a wasteful number, since it uses less digits than its factorization.

1326122003646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4243261 (or 4243258 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

Adding to 1326122003646 its reverse (6463002216231), we get a palindrome (7789124219877).

The spelling of 1326122003646 in words is "one trillion, three hundred twenty-six billion, one hundred twenty-two million, three thousand, six hundred forty-six".