20413240061 has 2 divisors, whose sum is σ = 20413240062. Its totient is φ = 20413240060.

The previous prime is 20413240037. The next prime is 20413240063. The reversal of 20413240061 is 16004231402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18914775961 + 1498464100 = 137531^2 + 38710^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20413240061 is a prime.

Together with 20413240063, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20413240063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10206620030 + 10206620031.

It is an arithmetic number, because the mean of its divisors is an integer number (10206620031).

Almost surely, 2^20413240061 is an apocalyptic number.

It is an amenable number.

20413240061 is a deficient number, since it is larger than the sum of its proper divisors (1).

20413240061 is an equidigital number, since it uses as much as digits as its factorization.

20413240061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 20413240061 its reverse (16004231402), we get a palindrome (36417471463).

The spelling of 20413240061 in words is "twenty billion, four hundred thirteen million, two hundred forty thousand, sixty-one".