20055054400 has 168 divisors, whose sum is σ = 51393440520. Its totient is φ = 7693271040.

The previous prime is 20055054373. The next prime is 20055054419. The reversal of 20055054400 is 445055002.

It can be written as a sum of positive squares in 12 ways, for example, as 2624717824 + 17430336576 = 51232^2 + 132024^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7283424 + ... + 7286176.

Almost surely, 2^20055054400 is an apocalyptic number.

20055054400 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 20055054400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25696720260).

20055054400 is an abundant number, since it is smaller than the sum of its proper divisors (31338386120).

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

20055054400 is a wasteful number, since it uses less digits than its factorization.

20055054400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2961 (or 2946 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 25.

The spelling of 20055054400 in words is "twenty billion, fifty-five million, fifty-four thousand, four hundred".