243550541425001 has 2 divisors, whose sum is σ = 243550541425002. Its totient is φ = 243550541425000.

The previous prime is 243550541424923. The next prime is 243550541425057. The reversal of 243550541425001 is 100524145055342.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 194304112368601 + 49246429056400 = 13939301^2 + 7017580^2 .

It is a cyclic number.

It is not a de Polignac number, because 243550541425001 - 2¹⁰ = 243550541423977 is a prime.

It is a super-3 number, since 3×243550541425001³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 243550541425001.

It is not a weakly prime, because it can be changed into another prime (243550541425201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121775270712500 + 121775270712501.

It is an arithmetic number, because the mean of its divisors is an integer number (121775270712501).

Almost surely, 2^{243550541425001} is an apocalyptic number.

It is an amenable number.

243550541425001 is a deficient number, since it is larger than the sum of its proper divisors (1).

243550541425001 is an equidigital number, since it uses as much as digits as its factorization.

243550541425001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480000, while the sum is 41.

The spelling of 243550541425001 in words is "two hundred forty-three trillion, five hundred fifty billion, five hundred forty-one million, four hundred twenty-five thousand, one".