20554845120 has 336 divisors, whose sum is σ = 75692617728. Its totient is φ = 5303854080.

The previous prime is 20554845083. The next prime is 20554845173. The reversal of 20554845120 is 2154845502.

20554845120 is a `hidden beast` number, since 2 + 0 + 55 + 484 + 5 + 120 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 2406297 + ... + 2414823.

It is an arithmetic number, because the mean of its divisors is an integer number (225275648).

Almost surely, 2^20554845120 is an apocalyptic number.

20554845120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20554845120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37846308864).

20554845120 is an abundant number, since it is smaller than the sum of its proper divisors (55137772608).

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

20554845120 is an equidigital number, since it uses as much as digits as its factorization.

20554845120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8590 (or 8568 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 36.

The spelling of 20554845120 in words is "twenty billion, five hundred fifty-four million, eight hundred forty-five thousand, one hundred twenty".