532403555440 has 160 divisors (see below), whose sum is σ = 1347839447040. Its totient is φ = 194835456000.

The previous prime is 532403555407. The next prime is 532403555473. The reversal of 532403555440 is 44555304235.

It is an interprime number because it is at equal distance from previous prime (532403555407) and next prime (532403555473).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 532403555393 and 532403555402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22935840 + ... + 22959040.

It is an arithmetic number, because the mean of its divisors is an integer number (8423996544).

Almost surely, 2^532403555440 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 532403555440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (673919723520).

532403555440 is an abundant number, since it is smaller than the sum of its proper divisors (815435891600).

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

532403555440 is a wasteful number, since it uses less digits than its factorization.

532403555440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23751 (or 23745 counting only the distinct ones).

The product of its (nonzero) digits is 720000, while the sum is 40.

Adding to 532403555440 its reverse (44555304235), we get a palindrome (576958859675).

The spelling of 532403555440 in words is "five hundred thirty-two billion, four hundred three million, five hundred fifty-five thousand, four hundred forty".