20430342541 has 4 divisors (see below), whose sum is σ = 23348962912. Its totient is φ = 17511722172.

The previous prime is 20430342511. The next prime is 20430342547. The reversal of 20430342541 is 14524303402.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 20430342541 - 2¹³ = 20430334349 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 (20430342547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1459310175 + ... + 1459310188.

It is an arithmetic number, because the mean of its divisors is an integer number (5837240728).

Almost surely, 2^20430342541 is an apocalyptic number.

It is an amenable number.

20430342541 is a deficient number, since it is larger than the sum of its proper divisors (2918620371).

20430342541 is an equidigital number, since it uses as much as digits as its factorization.

20430342541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2918620370.

The product of its (nonzero) digits is 11520, while the sum is 28.

Adding to 20430342541 its reverse (14524303402), we get a palindrome (34954645943).

The spelling of 20430342541 in words is "twenty billion, four hundred thirty million, three hundred forty-two thousand, five hundred forty-one".