241640986721 has 4 divisors (see below), whose sum is σ = 244132131012. Its totient is φ = 239149842432.

The previous prime is 241640986703. The next prime is 241640986759. The reversal of 241640986721 is 127689046142.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 92942058496 + 148698928225 = 304864^2 + 385615^2 .

It is a cyclic number.

It is not a de Polignac number, because 241640986721 - 2²² = 241636792417 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 241640986721.

It is not an unprimeable number, because it can be changed into a prime (241640985721) 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, 1245572000 + ... + 1245572193.

It is an arithmetic number, because the mean of its divisors is an integer number (61033032753).

Almost surely, 2^241640986721 is an apocalyptic number.

It is an amenable number.

241640986721 is a deficient number, since it is larger than the sum of its proper divisors (2491144291).

241640986721 is an equidigital number, since it uses as much as digits as its factorization.

241640986721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2491144290.

The product of its (nonzero) digits is 1161216, while the sum is 50.

The spelling of 241640986721 in words is "two hundred forty-one billion, six hundred forty million, nine hundred eighty-six thousand, seven hundred twenty-one".