11566515055 has 16 divisors (see below), whose sum is σ = 14558256000. Its totient is φ = 8811562752.

The previous prime is 11566515047. The next prime is 11566515113. The reversal of 11566515055 is 55051566511.

It is a cyclic number.

It is not a de Polignac number, because 11566515055 - 2³ = 11566515047 is a prime.

It is a super-3 number, since 3×11566515055³ (a number of 31 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11566514999 and 11566515017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 656430 + ... + 673819.

It is an arithmetic number, because the mean of its divisors is an integer number (909891000).

Almost surely, 2^11566515055 is an apocalyptic number.

11566515055 is a deficient number, since it is larger than the sum of its proper divisors (2991740945).

11566515055 is a wasteful number, since it uses less digits than its factorization.

11566515055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1330338.

The product of its (nonzero) digits is 112500, while the sum is 40.

The spelling of 11566515055 in words is "eleven billion, five hundred sixty-six million, five hundred fifteen thousand, fifty-five".