243451104040 has 16 divisors (see below), whose sum is σ = 547764984180. Its totient is φ = 97380441600.

The previous prime is 243451103999. The next prime is 243451104047. The reversal of 243451104040 is 40401154342.

It can be written as a sum of positive squares in 2 ways, for example, as 221948400996 + 21502703044 = 471114^2 + 146638^2 .

It is not an unprimeable number, because it can be changed into a prime (243451104047) by changing a digit.

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, 3043138761 + ... + 3043138840.

Almost surely, 2^243451104040 is an apocalyptic number.

243451104040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243451104040 is an abundant number, since it is smaller than the sum of its proper divisors (304313880140).

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

243451104040 is a wasteful number, since it uses less digits than its factorization.

243451104040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6086277612 (or 6086277608 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 243451104040 its reverse (40401154342), we get a palindrome (283852258382).

The spelling of 243451104040 in words is "two hundred forty-three billion, four hundred fifty-one million, one hundred four thousand, forty".