243100425555 has 128 divisors (see below), whose sum is σ = 482001408000. Its totient is φ = 115426321920.

The previous prime is 243100425551. The next prime is 243100425559. The reversal of 243100425555 is 555524001342.

It is an interprime number because it is at equal distance from previous prime (243100425551) and next prime (243100425559).

It is not a de Polignac number, because 243100425555 - 2² = 243100425551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243100425551) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 59596006 + ... + 59600084.

It is an arithmetic number, because the mean of its divisors is an integer number (3765636000).

Almost surely, 2^243100425555 is an apocalyptic number.

243100425555 is a deficient number, since it is larger than the sum of its proper divisors (238900982445).

243100425555 is a wasteful number, since it uses less digits than its factorization.

243100425555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5306 (or 5300 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 36.

Adding to 243100425555 its reverse (555524001342), we get a palindrome (798624426897).

The spelling of 243100425555 in words is "two hundred forty-three billion, one hundred million, four hundred twenty-five thousand, five hundred fifty-five".