20535018500003 has 72 divisors (see below), whose sum is σ = 25533557038080. Its totient is φ = 16155830678400.

The previous prime is 20535018499913. The next prime is 20535018500023. The reversal of 20535018500003 is 30000581053502.

It is not a de Polignac number, because 20535018500003 - 2²⁰ = 20535017451427 is a prime.

It is a super-2 number, since 2×20535018500003² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20535018500023) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 14869672373 + ... + 14869673753.

It is an arithmetic number, because the mean of its divisors is an integer number (354632736640).

Almost surely, 2^{20535018500003} is an apocalyptic number.

20535018500003 is a deficient number, since it is larger than the sum of its proper divisors (4998538538077).

20535018500003 is an frugal number, since it uses more digits than its factorization.

20535018500003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2917 (or 1507 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 32.

Adding to 20535018500003 its reverse (30000581053502), we get a palindrome (50535599553505).

The spelling of 20535018500003 in words is "twenty trillion, five hundred thirty-five billion, eighteen million, five hundred thousand, three".