20434541227 has 4 divisors (see below), whose sum is σ = 20909763160. Its totient is φ = 19959319296.

The previous prime is 20434541221. The next prime is 20434541261. The reversal of 20434541227 is 72214543402.

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 20434541227 - 2²⁷ = 20300323499 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20434541192 and 20434541201.

It is not an unprimeable number, because it can be changed into a prime (20434541221) 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, 237610902 + ... + 237610987.

It is an arithmetic number, because the mean of its divisors is an integer number (5227440790).

Almost surely, 2^20434541227 is an apocalyptic number.

20434541227 is a deficient number, since it is larger than the sum of its proper divisors (475221933).

20434541227 is an equidigital number, since it uses as much as digits as its factorization.

20434541227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475221932.

The product of its (nonzero) digits is 53760, while the sum is 34.

The spelling of 20434541227 in words is "twenty billion, four hundred thirty-four million, five hundred forty-one thousand, two hundred twenty-seven".