20161448539 has 2 divisors, whose sum is σ = 20161448540. Its totient is φ = 20161448538.

The previous prime is 20161448513. The next prime is 20161448551. The reversal of 20161448539 is 93584416102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20161448539 - 2⁵ = 20161448507 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20161448495 and 20161448504.

It is not a weakly prime, because it can be changed into another prime (20161448039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10080724269 + 10080724270.

It is an arithmetic number, because the mean of its divisors is an integer number (10080724270).

Almost surely, 2^20161448539 is an apocalyptic number.

20161448539 is a deficient number, since it is larger than the sum of its proper divisors (1).

20161448539 is an equidigital number, since it uses as much as digits as its factorization.

20161448539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 207360, while the sum is 43.

The spelling of 20161448539 in words is "twenty billion, one hundred sixty-one million, four hundred forty-eight thousand, five hundred thirty-nine".