1223404440144 has 40 divisors (see below), whose sum is σ = 3326801550240. Its totient is φ = 386338243968.

The previous prime is 1223404440119. The next prime is 1223404440179. The reversal of 1223404440144 is 4410444043221.

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 7 ways as a sum of consecutive naturals, for example, 670725207 + ... + 670727030.

It is an arithmetic number, because the mean of its divisors is an integer number (83170038756).

Almost surely, 2^{1223404440144} is an apocalyptic number.

It is an amenable number.

1223404440144 is an abundant number, since it is smaller than the sum of its proper divisors (2103397110096).

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

1223404440144 is a wasteful number, since it uses less digits than its factorization.

1223404440144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1341452267 (or 1341452261 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 33.

Adding to 1223404440144 its reverse (4410444043221), we get a palindrome (5633848483365).

The spelling of 1223404440144 in words is "one trillion, two hundred twenty-three billion, four hundred four million, four hundred forty thousand, one hundred forty-four".