1144312220440 has 32 divisors (see below), whose sum is σ = 2629483404480. Its totient is φ = 447986060032.

The previous prime is 1144312220419. The next prime is 1144312220459. The reversal of 1144312220440 is 440222134411.

It is a junction number, because it is equal to n+sod(n) for n = 1144312220399 and 1144312220408.

It is a congruent number.

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, 304336477 + ... + 304340236.

It is an arithmetic number, because the mean of its divisors is an integer number (82171356390).

Almost surely, 2^{1144312220440} is an apocalyptic number.

1144312220440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1144312220440 is an abundant number, since it is smaller than the sum of its proper divisors (1485171184040).

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

1144312220440 is a wasteful number, since it uses less digits than its factorization.

1144312220440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608676771 (or 608676767 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 1144312220440 its reverse (440222134411), we get a palindrome (1584534354851).

The spelling of 1144312220440 in words is "one trillion, one hundred forty-four billion, three hundred twelve million, two hundred twenty thousand, four hundred forty".