163508238541 has 2 divisors, whose sum is σ = 163508238542. Its totient is φ = 163508238540.

The previous prime is 163508238533. The next prime is 163508238617. The reversal of 163508238541 is 145832805361.

163508238541 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108090370441 + 55417868100 = 328771^2 + 235410^2 .

It is a cyclic number.

It is not a de Polignac number, because 163508238541 - 2³ = 163508238533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 163508238491 and 163508238500.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163508238511) 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, 81754119270 + 81754119271.

It is an arithmetic number, because the mean of its divisors is an integer number (81754119271).

Almost surely, 2^163508238541 is an apocalyptic number.

It is an amenable number.

163508238541 is a deficient number, since it is larger than the sum of its proper divisors (1).

163508238541 is an equidigital number, since it uses as much as digits as its factorization.

163508238541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 691200, while the sum is 46.

The spelling of 163508238541 in words is "one hundred sixty-three billion, five hundred eight million, two hundred thirty-eight thousand, five hundred forty-one".