163503453241543 has 8 divisors (see below), whose sum is σ = 173121465074112. Its totient is φ = 153885459369216.

The previous prime is 163503453241519. The next prime is 163503453241567. The reversal of 163503453241543 is 345142354305361.

It is an interprime number because it is at equal distance from previous prime (163503453241519) and next prime (163503453241567).

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

It is not a de Polignac number, because 163503453241543 - 2⁹ = 163503453241031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163503453241943) 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, 17264146 + ... + 25001152.

It is an arithmetic number, because the mean of its divisors is an integer number (21640183134264).

Almost surely, 2^{163503453241543} is an apocalyptic number.

163503453241543 is a deficient number, since it is larger than the sum of its proper divisors (9618011832569).

163503453241543 is a wasteful number, since it uses less digits than its factorization.

163503453241543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8980121.

The product of its (nonzero) digits is 7776000, while the sum is 49.

The spelling of 163503453241543 in words is "one hundred sixty-three trillion, five hundred three billion, four hundred fifty-three million, two hundred forty-one thousand, five hundred forty-three".