243125148375550 has 36 divisors (see below), whose sum is σ = 526043433286440. Its totient is φ = 83357193727920.

The previous prime is 243125148375503. The next prime is 243125148375559. The reversal of 243125148375550 is 55573841521342.

It is a junction number, because it is equal to n+sod(n) for n = 243125148375491 and 243125148375500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243125148375559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 49617374770 + ... + 49617379669.

It is an arithmetic number, because the mean of its divisors is an integer number (14612317591290).

Almost surely, 2^{243125148375550} is an apocalyptic number.

243125148375550 is an abundant number, since it is smaller than the sum of its proper divisors (282918284910890).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

243125148375550 is a wasteful number, since it uses less digits than its factorization.

243125148375550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99234754465 (or 99234754453 counting only the distinct ones).

The product of its (nonzero) digits is 20160000, while the sum is 55.

Adding to 243125148375550 its reverse (55573841521342), we get a palindrome (298698989896892).

The spelling of 243125148375550 in words is "two hundred forty-three trillion, one hundred twenty-five billion, one hundred forty-eight million, three hundred seventy-five thousand, five hundred fifty".