54205133440 has 128 divisors (see below), whose sum is σ = 136620432000. Its totient is φ = 20508364800.

The previous prime is 54205133431. The next prime is 54205133441. The reversal of 54205133440 is 4433150245.

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

It is not an unprimeable number, because it can be changed into a prime (54205133441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8520981 + ... + 8527339.

It is an arithmetic number, because the mean of its divisors is an integer number (1067347125).

Almost surely, 2^54205133440 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 54205133440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68310216000).

54205133440 is an abundant number, since it is smaller than the sum of its proper divisors (82415298560).

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

54205133440 is a wasteful number, since it uses less digits than its factorization.

54205133440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7098 (or 7086 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 31.

Adding to 54205133440 its reverse (4433150245), we get a palindrome (58638283685).

The spelling of 54205133440 in words is "fifty-four billion, two hundred five million, one hundred thirty-three thousand, four hundred forty".