163442726503 has 6 divisors (see below), whose sum is σ = 190127253336. Its totient is φ = 140093765532.

The previous prime is 163442726501. The next prime is 163442726533. The reversal of 163442726503 is 305627244361.

163442726503 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 163442726503 - 2¹ = 163442726501 is a prime.

It is a super-3 number, since 3×163442726503³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 163442726503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163442726501) by changing a digit.

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 in 5 ways as a sum of consecutive naturals, for example, 1667782875 + ... + 1667782972.

It is an arithmetic number, because the mean of its divisors is an integer number (31687875556).

Almost surely, 2^163442726503 is an apocalyptic number.

163442726503 is a deficient number, since it is larger than the sum of its proper divisors (26684526833).

163442726503 is an equidigital number, since it uses as much as digits as its factorization.

163442726503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3335565861 (or 3335565854 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 43.

The spelling of 163442726503 in words is "one hundred sixty-three billion, four hundred forty-two million, seven hundred twenty-six thousand, five hundred three".