243120355501 has 8 divisors (see below), whose sum is σ = 243919226880. Its totient is φ = 242322737232.

The previous prime is 243120355481. The next prime is 243120355531. The reversal of 243120355501 is 105553021342.

243120355501 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 243120355501 - 2⁹ = 243120354989 is a prime.

It is a super-2 number, since 2×243120355501² (a number of 24 digits) contains 22 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 (243120355531) 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 7 ways as a sum of consecutive naturals, for example, 76180 + ... + 701458.

It is an arithmetic number, because the mean of its divisors is an integer number (30489903360).

Almost surely, 2^243120355501 is an apocalyptic number.

It is an amenable number.

243120355501 is a deficient number, since it is larger than the sum of its proper divisors (798871379).

243120355501 is an equidigital number, since it uses as much as digits as its factorization.

243120355501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626555.

The product of its (nonzero) digits is 18000, while the sum is 31.

Adding to 243120355501 its reverse (105553021342), we get a palindrome (348673376843).

The spelling of 243120355501 in words is "two hundred forty-three billion, one hundred twenty million, three hundred fifty-five thousand, five hundred one".