20434145341 has 4 divisors (see below), whose sum is σ = 20438467452. Its totient is φ = 20429823232.

The previous prime is 20434145297. The next prime is 20434145351. The reversal of 20434145341 is 14354143402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14354143402 = 2 ⋅7177071701.

It can be written as a sum of positive squares in 2 ways, for example, as 4420255225 + 16013890116 = 66485^2 + 126546^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20434145341 is a prime.

It is a super-2 number, since 2×20434145341² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20434145351) 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, 2153956 + ... + 2163421.

It is an arithmetic number, because the mean of its divisors is an integer number (5109616863).

Almost surely, 2^20434145341 is an apocalyptic number.

It is an amenable number.

20434145341 is a deficient number, since it is larger than the sum of its proper divisors (4322111).

20434145341 is an equidigital number, since it uses as much as digits as its factorization.

20434145341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4322110.

The product of its (nonzero) digits is 23040, while the sum is 31.

Adding to 20434145341 its reverse (14354143402), we get a palindrome (34788288743).

The spelling of 20434145341 in words is "twenty billion, four hundred thirty-four million, one hundred forty-five thousand, three hundred forty-one".