54021820820 has 96 divisors (see below), whose sum is σ = 126710390016. Its totient is φ = 19180569600.

The previous prime is 54021820817. The next prime is 54021820829. The reversal of 54021820820 is 2802812045.

54021820820 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 (54021820829) 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, 1823849 + ... + 1853231.

It is an arithmetic number, because the mean of its divisors is an integer number (1319899896).

Almost surely, 2^54021820820 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 54021820820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63355195008).

54021820820 is an abundant number, since it is smaller than the sum of its proper divisors (72688569196).

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

54021820820 is a wasteful number, since it uses less digits than its factorization.

54021820820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29601 (or 29599 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 32.

The spelling of 54021820820 in words is "fifty-four billion, twenty-one million, eight hundred twenty thousand, eight hundred twenty".