163953538542703 has 8 divisors (see below), whose sum is σ = 201788970514208. Its totient is φ = 129721481044704.

The previous prime is 163953538542601. The next prime is 163953538542713. The reversal of 163953538542703 is 307245835359361.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 163953538542703 - 2⁹ = 163953538542191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163953538542713) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 900843618276 + ... + 900843618457.

It is an arithmetic number, because the mean of its divisors is an integer number (25223621314276).

It is a 1-persistent number, because it is pandigital, but 2⋅163953538542703 = 327907077085406 is not.

Almost surely, 2^{163953538542703} is an apocalyptic number.

163953538542703 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

163953538542703 is a deficient number, since it is larger than the sum of its proper divisors (37835431971505).

163953538542703 is a wasteful number, since it uses less digits than its factorization.

163953538542703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1801687236753.

The product of its (nonzero) digits is 244944000, while the sum is 64.

The spelling of 163953538542703 in words is "one hundred sixty-three trillion, nine hundred fifty-three billion, five hundred thirty-eight million, five hundred forty-two thousand, seven hundred three".