54543533440 has 128 divisors (see below), whose sum is σ = 142519940640. Its totient is φ = 19795968000.

The previous prime is 54543533423. The next prime is 54543533449. The reversal of 54543533440 is 4433534545.

It is a tau number, because it is divible by the number of its divisors (128).

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 = 54543533393 and 54543533402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54543533449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3801480 + ... + 3815800.

Almost surely, 2^54543533440 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 54543533440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71259970320).

54543533440 is an abundant number, since it is smaller than the sum of its proper divisors (87976407200).

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

54543533440 is a wasteful number, since it uses less digits than its factorization.

54543533440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14892 (or 14880 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 40.

It can be divided in two parts, 545435 and 33440, that added together give a palindrome (578875).

The spelling of 54543533440 in words is "fifty-four billion, five hundred forty-three million, five hundred thirty-three thousand, four hundred forty".