20363540111 has 4 divisors (see below), whose sum is σ = 21435305400. Its totient is φ = 19291774824.

The previous prime is 20363540081. The next prime is 20363540173. The reversal of 20363540111 is 11104536302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20363540111 - 2¹⁴ = 20363523727 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 (20363590111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 535882616 + ... + 535882653.

It is an arithmetic number, because the mean of its divisors is an integer number (5358826350).

Almost surely, 2^20363540111 is an apocalyptic number.

20363540111 is a deficient number, since it is larger than the sum of its proper divisors (1071765289).

20363540111 is a wasteful number, since it uses less digits than its factorization.

20363540111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1071765288.

The product of its (nonzero) digits is 2160, while the sum is 26.

The spelling of 20363540111 in words is "twenty billion, three hundred sixty-three million, five hundred forty thousand, one hundred eleven".