240640576043721 has 32 divisors (see below), whose sum is σ = 380120588190720. Its totient is φ = 132542047106496.

The previous prime is 240640576043717. The next prime is 240640576043723. The reversal of 240640576043721 is 127340675046042.

It is not a de Polignac number, because 240640576043721 - 2² = 240640576043717 is a prime.

It is not an unprimeable number, because it can be changed into a prime (240640576043723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1447135231 + ... + 1447301508.

It is an arithmetic number, because the mean of its divisors is an integer number (11878768380960).

Almost surely, 2^{240640576043721} is an apocalyptic number.

240640576043721 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

240640576043721 is a deficient number, since it is larger than the sum of its proper divisors (139480012146999).

240640576043721 is a wasteful number, since it uses less digits than its factorization.

240640576043721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2894436893.

The product of its (nonzero) digits is 6773760, while the sum is 51.

The spelling of 240640576043721 in words is "two hundred forty trillion, six hundred forty billion, five hundred seventy-six million, forty-three thousand, seven hundred twenty-one".