20003555107213 has 8 divisors (see below), whose sum is σ = 21180431518200. Its totient is φ = 18826700551680.

The previous prime is 20003555107189. The next prime is 20003555107267. The reversal of 20003555107213 is 31270155530002.

It can be written as a sum of positive squares in 4 ways, for example, as 4740992373924 + 15262562733289 = 2177382^2 + 3906733^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20003555107213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20003555107273) 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, 3560538 + ... + 7258411.

It is an arithmetic number, because the mean of its divisors is an integer number (2647553939775).

Almost surely, 2^{20003555107213} is an apocalyptic number.

It is an amenable number.

20003555107213 is a deficient number, since it is larger than the sum of its proper divisors (1176876410987).

20003555107213 is a wasteful number, since it uses less digits than its factorization.

20003555107213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10927727.

The product of its (nonzero) digits is 31500, while the sum is 34.

The spelling of 20003555107213 in words is "twenty trillion, three billion, five hundred fifty-five million, one hundred seven thousand, two hundred thirteen".