240643535731441 has 8 divisors (see below), whose sum is σ = 247147846249640. Its totient is φ = 234139247906688.

The previous prime is 240643535731327. The next prime is 240643535731447. The reversal of 240643535731441 is 144137535346042.

It can be written as a sum of positive squares in 4 ways, for example, as 115317100416400 + 125326435315041 = 10738580^2 + 11194929^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 240643535731441 - 2²⁵ = 240643502177009 is a prime.

It is a super-2 number, since 2×240643535731441² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (240643535731447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17033245 + ... + 27774421.

It is an arithmetic number, because the mean of its divisors is an integer number (30893480781205).

Almost surely, 2^{240643535731441} is an apocalyptic number.

It is an amenable number.

240643535731441 is a deficient number, since it is larger than the sum of its proper divisors (6504310518199).

240643535731441 is a wasteful number, since it uses less digits than its factorization.

240643535731441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11346723.

The product of its (nonzero) digits is 14515200, while the sum is 52.

The spelling of 240643535731441 in words is "two hundred forty trillion, six hundred forty-three billion, five hundred thirty-five million, seven hundred thirty-one thousand, four hundred forty-one".