163123556435 has 16 divisors (see below), whose sum is σ = 223721815296. Its totient is φ = 111851398368.

The previous prime is 163123556429. The next prime is 163123556473. The reversal of 163123556435 is 534655321361.

It is a cyclic number.

It is not a de Polignac number, because 163123556435 - 2³⁰ = 162049814611 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 869492 + ... + 1040318.

It is an arithmetic number, because the mean of its divisors is an integer number (13982613456).

Almost surely, 2^163123556435 is an apocalyptic number.

163123556435 is a deficient number, since it is larger than the sum of its proper divisors (60598258861).

163123556435 is a wasteful number, since it uses less digits than its factorization.

163123556435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198122.

The product of its digits is 972000, while the sum is 44.

Adding to 163123556435 its reverse (534655321361), we get a palindrome (697778877796).

The spelling of 163123556435 in words is "one hundred sixty-three billion, one hundred twenty-three million, five hundred fifty-six thousand, four hundred thirty-five".