20454003755880 has 128 divisors (see below), whose sum is σ = 62207785900800. Its totient is φ = 5379529807872.

The previous prime is 20454003755869. The next prime is 20454003756023. The reversal of 20454003755880 is 8855730045402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1827909 + ... + 6652011.

It is an arithmetic number, because the mean of its divisors is an integer number (485998327350).

Almost surely, 2^{20454003755880} is an apocalyptic number.

20454003755880 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 20454003755880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31103892950400).

20454003755880 is an abundant number, since it is smaller than the sum of its proper divisors (41753782144920).

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

20454003755880 is a wasteful number, since it uses less digits than its factorization.

20454003755880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4824603 (or 4824599 counting only the distinct ones).

The product of its (nonzero) digits is 5376000, while the sum is 51.

The spelling of 20454003755880 in words is "twenty trillion, four hundred fifty-four billion, three million, seven hundred fifty-five thousand, eight hundred eighty".