20552508459040 has 144 divisors (see below), whose sum is σ = 50490351523584. Its totient is φ = 7897702348800.

The previous prime is 20552508459023. The next prime is 20552508459097. The reversal of 20552508459040 is 4095480525502.

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, 92983855 + ... + 93204625.

It is an arithmetic number, because the mean of its divisors is an integer number (350627441136).

Almost surely, 2^{20552508459040} is an apocalyptic number.

20552508459040 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 20552508459040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25245175761792).

20552508459040 is an abundant number, since it is smaller than the sum of its proper divisors (29937843064544).

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

20552508459040 is a wasteful number, since it uses less digits than its factorization.

20552508459040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221091 (or 220946 counting only the distinct ones).

The product of its (nonzero) digits is 2880000, while the sum is 49.

The spelling of 20552508459040 in words is "twenty trillion, five hundred fifty-two billion, five hundred eight million, four hundred fifty-nine thousand, forty".