20003534505345 has 64 divisors (see below), whose sum is σ = 32823077769216. Its totient is φ = 10397988672000.

The previous prime is 20003534505343. The next prime is 20003534505371. The reversal of 20003534505345 is 54350543530002.

It is not a de Polignac number, because 20003534505345 - 2¹ = 20003534505343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20003534505341) by changing a digit.

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, 1652222782 + ... + 1652234888.

It is an arithmetic number, because the mean of its divisors is an integer number (512860590144).

Almost surely, 2^{20003534505345} is an apocalyptic number.

It is an amenable number.

20003534505345 is a deficient number, since it is larger than the sum of its proper divisors (12819543263871).

20003534505345 is a wasteful number, since it uses less digits than its factorization.

20003534505345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21750.

The product of its (nonzero) digits is 540000, while the sum is 39.

The spelling of 20003534505345 in words is "twenty trillion, three billion, five hundred thirty-four million, five hundred five thousand, three hundred forty-five".