11616600616521 has 16 divisors (see below), whose sum is σ = 15548866660800. Its totient is φ = 7714376702528.

The previous prime is 11616600616499. The next prime is 11616600616591. The reversal of 11616600616521 is 12561600661611.

It is a cyclic number.

It is not a de Polignac number, because 11616600616521 - 2¹⁰ = 11616600615497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11616600616591) 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, 3910990 + ... + 6207176.

It is an arithmetic number, because the mean of its divisors is an integer number (971804166300).

Almost surely, 2^{11616600616521} is an apocalyptic number.

It is an amenable number.

11616600616521 is a deficient number, since it is larger than the sum of its proper divisors (3932266044279).

11616600616521 is a wasteful number, since it uses less digits than its factorization.

11616600616521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2302728.

The product of its (nonzero) digits is 77760, while the sum is 42.

The spelling of 11616600616521 in words is "eleven trillion, six hundred sixteen billion, six hundred million, six hundred sixteen thousand, five hundred twenty-one".