1544022132440 has 128 divisors (see below), whose sum is σ = 3888080222400. Its totient is φ = 548399185920.

The previous prime is 1544022132431. The next prime is 1544022132487. The reversal of 1544022132440 is 442312204451.

It is a junction number, because it is equal to n+sod(n) for n = 1544022132397 and 1544022132406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2865782 + ... + 3361658.

Almost surely, 2^{1544022132440} is an apocalyptic number.

1544022132440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1544022132440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1944040111200).

1544022132440 is an abundant number, since it is smaller than the sum of its proper divisors (2344058089960).

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

1544022132440 is a wasteful number, since it uses less digits than its factorization.

1544022132440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496165 (or 496161 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 32.

Adding to 1544022132440 its reverse (442312204451), we get a palindrome (1986334336891).

The spelling of 1544022132440 in words is "one trillion, five hundred forty-four billion, twenty-two million, one hundred thirty-two thousand, four hundred forty".