242643163503 has 32 divisors (see below), whose sum is σ = 363603792384. Its totient is φ = 142809144192.

The previous prime is 242643163489. The next prime is 242643163537. The reversal of 242643163503 is 305361346242.

It is not a de Polignac number, because 242643163503 - 2⁴ = 242643163487 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242643163003) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 12515125 + ... + 12534497.

It is an arithmetic number, because the mean of its divisors is an integer number (11362618512).

Almost surely, 2^242643163503 is an apocalyptic number.

242643163503 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

242643163503 is a deficient number, since it is larger than the sum of its proper divisors (120960628881).

242643163503 is a wasteful number, since it uses less digits than its factorization.

242643163503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33375.

The product of its (nonzero) digits is 311040, while the sum is 39.

The spelling of 242643163503 in words is "two hundred forty-two billion, six hundred forty-three million, one hundred sixty-three thousand, five hundred three".