20010553533504 has 448 divisors, whose sum is σ = 60781535942400. Its totient is φ = 6533773424640.

The previous prime is 20010553533499. The next prime is 20010553533521. The reversal of 20010553533504 is 40533535501002.

20010553533504 is a `hidden beast` number, since 2 + 0 + 0 + 1 + 0 + 553 + 53 + 3 + 50 + 4 = 666.

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

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 63 ways as a sum of consecutive naturals, for example, 1697386042 + ... + 1697397830.

It is an arithmetic number, because the mean of its divisors is an integer number (135673071300).

Almost surely, 2^{20010553533504} is an apocalyptic number.

20010553533504 is a gapful number since it is divisible by the number (24) 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 20010553533504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30390767971200).

20010553533504 is an abundant number, since it is smaller than the sum of its proper divisors (40770982408896).

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

20010553533504 is an equidigital number, since it uses as much as digits as its factorization.

20010553533504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12070 (or 12042 counting only the distinct ones).

The product of its (nonzero) digits is 135000, while the sum is 36.

The spelling of 20010553533504 in words is "twenty trillion, ten billion, five hundred fifty-three million, five hundred thirty-three thousand, five hundred four".