20006545052603 has 8 divisors (see below), whose sum is σ = 20215137566400. Its totient is φ = 19798943477760.

The previous prime is 20006545052587. The next prime is 20006545052621. The reversal of 20006545052603 is 30625054560002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20006545052603 - 2⁴ = 20006545052587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20006545052623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 247694150 + ... + 247774907.

It is an arithmetic number, because the mean of its divisors is an integer number (2526892195800).

Almost surely, 2^{20006545052603} is an apocalyptic number.

20006545052603 is a deficient number, since it is larger than the sum of its proper divisors (208592513797).

20006545052603 is a wasteful number, since it uses less digits than its factorization.

20006545052603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495469477.

The product of its (nonzero) digits is 216000, while the sum is 38.

The spelling of 20006545052603 in words is "twenty trillion, six billion, five hundred forty-five million, fifty-two thousand, six hundred three".