163534405543450 has 24 divisors (see below), whose sum is σ = 304174360238940. Its totient is φ = 65413683523200.

The previous prime is 163534405543387. The next prime is 163534405543489. The reversal of 163534405543450 is 54345504435361.

163534405543450 is digitally balanced in base 3, 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 6 ways, for example, as 61264731098041 + 102269674445409 = 7827179^2 + 10112847^2 .

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 11 ways as a sum of consecutive naturals, for example, 58273540 + ... + 61015360.

Almost surely, 2^{163534405543450} is an apocalyptic number.

163534405543450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

163534405543450 is a deficient number, since it is larger than the sum of its proper divisors (140639954695490).

163534405543450 is a wasteful number, since it uses less digits than its factorization.

163534405543450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3934722 (or 3934717 counting only the distinct ones).

The product of its (nonzero) digits is 25920000, while the sum is 52.

The spelling of 163534405543450 in words is "one hundred sixty-three trillion, five hundred thirty-four billion, four hundred five million, five hundred forty-three thousand, four hundred fifty".