54321605720 has 64 divisors (see below), whose sum is σ = 128913120000. Its totient is φ = 20543960448.

The previous prime is 54321605719. The next prime is 54321605729. The reversal of 54321605720 is 2750612345.

54321605720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54321605729) 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, 311231 + ... + 453329.

It is an arithmetic number, because the mean of its divisors is an integer number (2014267500).

Almost surely, 2^54321605720 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 54321605720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64456560000).

54321605720 is an abundant number, since it is smaller than the sum of its proper divisors (74591514280).

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

54321605720 is a wasteful number, since it uses less digits than its factorization.

54321605720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142632 (or 142628 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 35.

The spelling of 54321605720 in words is "fifty-four billion, three hundred twenty-one million, six hundred five thousand, seven hundred twenty".