11605441521 has 16 divisors (see below), whose sum is σ = 15580071360. Its totient is φ = 7683983040.

The previous prime is 11605441457. The next prime is 11605441559. The reversal of 11605441521 is 12514450611.

It is not a de Polignac number, because 11605441521 - 2⁶ = 11605441457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11605441021) 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 15 ways as a sum of consecutive naturals, for example, 492435 + ... + 515463.

It is an arithmetic number, because the mean of its divisors is an integer number (973754460).

Almost surely, 2^11605441521 is an apocalyptic number.

It is an amenable number.

11605441521 is a deficient number, since it is larger than the sum of its proper divisors (3974629839).

11605441521 is a wasteful number, since it uses less digits than its factorization.

11605441521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24176.

The product of its (nonzero) digits is 4800, while the sum is 30.

The spelling of 11605441521 in words is "eleven billion, six hundred five million, four hundred forty-one thousand, five hundred twenty-one".