241661413300721 has 4 divisors (see below), whose sum is σ = 241944720937332. Its totient is φ = 241378105664112.

The previous prime is 241661413300687. The next prime is 241661413300789. The reversal of 241661413300721 is 127003314166142.

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 71094913968400 + 170566499332321 = 8431780^2 + 13060111^2 .

It is a cyclic number.

It is not a de Polignac number, because 241661413300721 - 2⁴⁶ = 171292669123057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (241661413300121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141653817026 + ... + 141653818731.

It is an arithmetic number, because the mean of its divisors is an integer number (60486180234333).

Almost surely, 2^{241661413300721} is an apocalyptic number.

It is an amenable number.

241661413300721 is a deficient number, since it is larger than the sum of its proper divisors (283307636611).

241661413300721 is an equidigital number, since it uses as much as digits as its factorization.

241661413300721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283307636610.

The product of its (nonzero) digits is 145152, while the sum is 41.

Adding to 241661413300721 its reverse (127003314166142), we get a palindrome (368664727466863).

The spelling of 241661413300721 in words is "two hundred forty-one trillion, six hundred sixty-one billion, four hundred thirteen million, three hundred thousand, seven hundred twenty-one".