243555134402 has 8 divisors (see below), whose sum is σ = 365974764300. Its totient is φ = 121563546304.

The previous prime is 243555134393. The next prime is 243555134413. The reversal of 243555134402 is 204431555342.

It can be written as a sum of positive squares in 2 ways, for example, as 242801577001 + 753557401 = 492749^2 + 27451^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107009027 + ... + 107011302.

Almost surely, 2^243555134402 is an apocalyptic number.

243555134402 is a deficient number, since it is larger than the sum of its proper divisors (122419629898).

243555134402 is a wasteful number, since it uses less digits than its factorization.

243555134402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214020900.

The product of its (nonzero) digits is 288000, while the sum is 38.

Adding to 243555134402 its reverse (204431555342), we get a palindrome (447986689744).

The spelling of 243555134402 in words is "two hundred forty-three billion, five hundred fifty-five million, one hundred thirty-four thousand, four hundred two".