241538605561 has 16 divisors (see below), whose sum is σ = 267288336000. Its totient is φ = 216422684800.

The previous prime is 241538605547. The next prime is 241538605579. The reversal of 241538605561 is 165506835142.

It is a cyclic number.

It is not a de Polignac number, because 241538605561 - 2¹¹ = 241538603513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (241538605261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2648835 + ... + 2738503.

It is an arithmetic number, because the mean of its divisors is an integer number (16705521000).

Almost surely, 2^241538605561 is an apocalyptic number.

It is an amenable number.

241538605561 is a deficient number, since it is larger than the sum of its proper divisors (25749730439).

241538605561 is a wasteful number, since it uses less digits than its factorization.

241538605561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93200.

The product of its (nonzero) digits is 864000, while the sum is 46.

The spelling of 241538605561 in words is "two hundred forty-one billion, five hundred thirty-eight million, six hundred five thousand, five hundred sixty-one".