20432121163 has 2 divisors, whose sum is σ = 20432121164. Its totient is φ = 20432121162.

The previous prime is 20432121119. The next prime is 20432121191. The reversal of 20432121163 is 36112123402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20432121163 - 2¹³ = 20432112971 is a prime.

It is not a weakly prime, because it can be changed into another prime (20432121113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10216060581 + 10216060582.

It is an arithmetic number, because the mean of its divisors is an integer number (10216060582).

Almost surely, 2^20432121163 is an apocalyptic number.

20432121163 is a deficient number, since it is larger than the sum of its proper divisors (1).

20432121163 is an equidigital number, since it uses as much as digits as its factorization.

20432121163 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 20432121163 its reverse (36112123402), we get a palindrome (56544244565).

The spelling of 20432121163 in words is "twenty billion, four hundred thirty-two million, one hundred twenty-one thousand, one hundred sixty-three".