553323203440 has 160 divisors (see below), whose sum is σ = 1480561666560. Its totient is φ = 188383491072.

The previous prime is 553323203437. The next prime is 553323203443. The reversal of 553323203440 is 44302323355.

It is an interprime number because it is at equal distance from previous prime (553323203437) and next prime (553323203443).

It is a junction number, because it is equal to n+sod(n) for n = 553323203396 and 553323203405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (553323203443) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 155995747 + ... + 155999293.

It is an arithmetic number, because the mean of its divisors is an integer number (9253510416).

Almost surely, 2^553323203440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 553323203440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (740280833280).

553323203440 is an abundant number, since it is smaller than the sum of its proper divisors (927238463120).

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

553323203440 is a wasteful number, since it uses less digits than its factorization.

553323203440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5439 (or 5433 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 34.

Adding to 553323203440 its reverse (44302323355), we get a palindrome (597625526795).

The spelling of 553323203440 in words is "five hundred fifty-three billion, three hundred twenty-three million, two hundred three thousand, four hundred forty".