163442653412543 has 8 divisors (see below), whose sum is σ = 164487802421760. Its totient is φ = 162400056661080.

The previous prime is 163442653412501. The next prime is 163442653412557. The reversal of 163442653412543 is 345214356244361.

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 163442653412543 - 2²⁰ = 163442652363967 is a prime.

It is a super-4 number, since 4×163442653412543⁴ (a number of 58 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163442653412593) 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, 637935953 + ... + 638192106.

It is an arithmetic number, because the mean of its divisors is an integer number (20560975302720).

Almost surely, 2^{163442653412543} is an apocalyptic number.

163442653412543 is a deficient number, since it is larger than the sum of its proper divisors (1045149009217).

163442653412543 is a wasteful number, since it uses less digits than its factorization.

163442653412543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1276128877.

The product of its digits is 24883200, while the sum is 53.

The spelling of 163442653412543 in words is "one hundred sixty-three trillion, four hundred forty-two billion, six hundred fifty-three million, four hundred twelve thousand, five hundred forty-three".