243540004140503 has 16 divisors (see below), whose sum is σ = 278696666149440. Its totient is φ = 208474656768000.

The previous prime is 243540004140493. The next prime is 243540004140509. The reversal of 243540004140503 is 305041400045342.

It is not a de Polignac number, because 243540004140503 - 2²⁶ = 243539937031639 is a prime.

It is a super-3 number, since 3×243540004140503³ (a number of 44 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243540004140509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 567158963 + ... + 567588203.

It is an arithmetic number, because the mean of its divisors is an integer number (17418541634340).

Almost surely, 2^{243540004140503} is an apocalyptic number.

243540004140503 is a deficient number, since it is larger than the sum of its proper divisors (35156662008937).

243540004140503 is a wasteful number, since it uses less digits than its factorization.

243540004140503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535418.

The product of its (nonzero) digits is 115200, while the sum is 35.

Adding to 243540004140503 its reverse (305041400045342), we get a palindrome (548581404185845).

The spelling of 243540004140503 in words is "two hundred forty-three trillion, five hundred forty billion, four million, one hundred forty thousand, five hundred three".