20003555436073 has 16 divisors (see below), whose sum is σ = 21836086142400. Its totient is φ = 18173365986880.

The previous prime is 20003555436071. The next prime is 20003555436089. The reversal of 20003555436073 is 37063455530002.

It is a cyclic number.

It is not a de Polignac number, because 20003555436073 - 2¹ = 20003555436071 is a prime.

It is a super-3 number, since 3×20003555436073³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20003555436071) 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 15 ways as a sum of consecutive naturals, for example, 113756943 + ... + 113932651.

It is an arithmetic number, because the mean of its divisors is an integer number (1364755383900).

Almost surely, 2^{20003555436073} is an apocalyptic number.

It is an amenable number.

20003555436073 is a deficient number, since it is larger than the sum of its proper divisors (1832530706327).

20003555436073 is a wasteful number, since it uses less digits than its factorization.

20003555436073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182312.

The product of its (nonzero) digits is 1134000, while the sum is 43.

The spelling of 20003555436073 in words is "twenty trillion, three billion, five hundred fifty-five million, four hundred thirty-six thousand, seventy-three".