163573439156 has 6 divisors (see below), whose sum is σ = 286253518530. Its totient is φ = 81786719576.

The previous prime is 163573439149. The next prime is 163573439171. The reversal of 163573439156 is 651934375361.

163573439156 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 105939834256 + 57633604900 = 325484^2 + 240070^2 .

It is a junction number, because it is equal to n+sod(n) for n = 163573439098 and 163573439107.

It is a congruent number.

It is an unprimeable number.

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, 20446679891 + ... + 20446679898.

It is an arithmetic number, because the mean of its divisors is an integer number (47708919755).

Almost surely, 2^163573439156 is an apocalyptic number.

It is an amenable number.

163573439156 is a deficient number, since it is larger than the sum of its proper divisors (122680079374).

163573439156 is a wasteful number, since it uses less digits than its factorization.

163573439156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40893359793 (or 40893359791 counting only the distinct ones).

The product of its digits is 6123600, while the sum is 53.

The spelling of 163573439156 in words is "one hundred sixty-three billion, five hundred seventy-three million, four hundred thirty-nine thousand, one hundred fifty-six".