20045351103 has 4 divisors (see below), whose sum is σ = 26727134808. Its totient is φ = 13363567400.

The previous prime is 20045351071. The next prime is 20045351113. The reversal of 20045351103 is 30115354002.

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 20045351103 - 2⁵ = 20045351071 is a prime.

It is a super-2 number, since 2×20045351103² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20045351113) 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, 3340891848 + ... + 3340891853.

It is an arithmetic number, because the mean of its divisors is an integer number (6681783702).

Almost surely, 2^20045351103 is an apocalyptic number.

20045351103 is a deficient number, since it is larger than the sum of its proper divisors (6681783705).

20045351103 is an equidigital number, since it uses as much as digits as its factorization.

20045351103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6681783704.

The product of its (nonzero) digits is 1800, while the sum is 24.

The spelling of 20045351103 in words is "twenty billion, forty-five million, three hundred fifty-one thousand, one hundred three".