20413142305 has 4 divisors (see below), whose sum is σ = 24495770772. Its totient is φ = 16330513840.

The previous prime is 20413142303. The next prime is 20413142327. The reversal of 20413142305 is 50324131402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50324131402 = 2 ⋅25162065701.

It can be written as a sum of positive squares in 2 ways, for example, as 9364819984 + 11048322321 = 96772^2 + 105111^2 .

It is not a de Polignac number, because 20413142305 - 2¹ = 20413142303 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20413142305.

It is not an unprimeable number, because it can be changed into a prime (20413142303) 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, 2041314226 + ... + 2041314235.

It is an arithmetic number, because the mean of its divisors is an integer number (6123942693).

Almost surely, 2^20413142305 is an apocalyptic number.

It is an amenable number.

20413142305 is a deficient number, since it is larger than the sum of its proper divisors (4082628467).

20413142305 is an equidigital number, since it uses as much as digits as its factorization.

20413142305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4082628466.

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 20413142305 its reverse (50324131402), we get a palindrome (70737273707).

The spelling of 20413142305 in words is "twenty billion, four hundred thirteen million, one hundred forty-two thousand, three hundred five".