163534405543449 has 16 divisors (see below), whose sum is σ = 229524992585280. Its totient is φ = 103283528760000.

The previous prime is 163534405543387. The next prime is 163534405543489. The reversal of 163534405543449 is 944345504435361.

It is not a de Polignac number, because 163534405543449 - 2⁸ = 163534405543193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 163534405543392 and 163534405543401.

It is not an unprimeable number, because it can be changed into a prime (163534405543489) by changing a digit.

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, 14495302 + ... + 23177199.

It is an arithmetic number, because the mean of its divisors is an integer number (14345312036580).

Almost surely, 2^{163534405543449} is an apocalyptic number.

163534405543449 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

163534405543449 is a deficient number, since it is larger than the sum of its proper divisors (65990587041831).

163534405543449 is a wasteful number, since it uses less digits than its factorization.

163534405543449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37748680.

The product of its (nonzero) digits is 186624000, while the sum is 60.

The spelling of 163534405543449 in words is "one hundred sixty-three trillion, five hundred thirty-four billion, four hundred five million, five hundred forty-three thousand, four hundred forty-nine".