20413526414321 has 2 divisors, whose sum is σ = 20413526414322. Its totient is φ = 20413526414320.

The previous prime is 20413526414287. The next prime is 20413526414383. The reversal of 20413526414321 is 12341462531402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10962482609296 + 9451043805025 = 3310964^2 + 3074255^2 .

It is a cyclic number.

It is not a de Polignac number, because 20413526414321 - 2²⁶ = 20413459305457 is a prime.

It is not a weakly prime, because it can be changed into another prime (20413526416321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10206763207160 + 10206763207161.

It is an arithmetic number, because the mean of its divisors is an integer number (10206763207161).

Almost surely, 2^{20413526414321} is an apocalyptic number.

It is an amenable number.

20413526414321 is a deficient number, since it is larger than the sum of its proper divisors (1).

20413526414321 is an equidigital number, since it uses as much as digits as its factorization.

20413526414321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 138240, while the sum is 38.

Adding to 20413526414321 its reverse (12341462531402), we get a palindrome (32754988945723).

The spelling of 20413526414321 in words is "twenty trillion, four hundred thirteen billion, five hundred twenty-six million, four hundred fourteen thousand, three hundred twenty-one".