11606061521 has 4 divisors (see below), whose sum is σ = 11617126500. Its totient is φ = 11594996544.

The previous prime is 11606061473. The next prime is 11606061569. The reversal of 11606061521 is 12516060611.

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

It is an interprime number because it is at equal distance from previous prime (11606061473) and next prime (11606061569).

It can be written as a sum of positive squares in 2 ways, for example, as 4646330896 + 6959730625 = 68164^2 + 83425^2 .

It is a cyclic number.

It is not a de Polignac number, because 11606061521 - 2⁶ = 11606061457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11606061581) 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, 5530916 + ... + 5533013.

It is an arithmetic number, because the mean of its divisors is an integer number (2904281625).

Almost surely, 2^11606061521 is an apocalyptic number.

It is an amenable number.

11606061521 is a deficient number, since it is larger than the sum of its proper divisors (11064979).

11606061521 is a wasteful number, since it uses less digits than its factorization.

11606061521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11064978.

The product of its (nonzero) digits is 2160, while the sum is 29.

The spelling of 11606061521 in words is "eleven billion, six hundred six million, sixty-one thousand, five hundred twenty-one".