243540004140504 has 80 divisors (see below), whose sum is σ = 682202788153920. Its totient is φ = 81172232930880.

The previous prime is 243540004140493. The next prime is 243540004140509. The reversal of 243540004140504 is 405041400045342.

243540004140504 is a `hidden beast` number, since 2 + 4 + 3 + 5 + 4 + 0 + 0 + 0 + 4 + 140 + 504 = 666.

It is a super-3 number, since 3×243540004140504³ (a number of 44 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 19 ways as a sum of consecutive naturals, for example, 11203752 + ... + 24750839.

It is an arithmetic number, because the mean of its divisors is an integer number (8527534851924).

Almost surely, 2^{243540004140504} is an apocalyptic number.

243540004140504 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

243540004140504 is an abundant number, since it is smaller than the sum of its proper divisors (438662784013416).

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

243540004140504 is a wasteful number, since it uses less digits than its factorization.

243540004140504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35965062 (or 35965049 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 36.

Adding to 243540004140504 its reverse (405041400045342), we get a palindrome (648581404185846).

The spelling of 243540004140504 in words is "two hundred forty-three trillion, five hundred forty billion, four million, one hundred forty thousand, five hundred four".