20432433013 has 2 divisors, whose sum is σ = 20432433014. Its totient is φ = 20432433012.

The previous prime is 20432432989. The next prime is 20432433031. The reversal of 20432433013 is 31033423402.

Together with next prime (20432433031) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19193885764 + 1238547249 = 138542^2 + 35193^2 .

It is a cyclic number.

It is not a de Polignac number, because 20432433013 - 2⁵ = 20432432981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20432433713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10216216506 + 10216216507.

It is an arithmetic number, because the mean of its divisors is an integer number (10216216507).

Almost surely, 2^20432433013 is an apocalyptic number.

It is an amenable number.

20432433013 is a deficient number, since it is larger than the sum of its proper divisors (1).

20432433013 is an equidigital number, since it uses as much as digits as its factorization.

20432433013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 25.

Adding to 20432433013 its reverse (31033423402), we get a palindrome (51465856415).

The spelling of 20432433013 in words is "twenty billion, four hundred thirty-two million, four hundred thirty-three thousand, thirteen".