11655561516 has 96 divisors (see below), whose sum is σ = 27984058368. Its totient is φ = 3774781440.

The previous prime is 11655561503. The next prime is 11655561523. The reversal of 11655561516 is 61516555611.

11655561516 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×11655561516² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21544206 + ... + 21544746.

It is an arithmetic number, because the mean of its divisors is an integer number (291500608).

Almost surely, 2^11655561516 is an apocalyptic number.

It is an amenable number.

11655561516 is an abundant number, since it is smaller than the sum of its proper divisors (16328496852).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11655561516 is a wasteful number, since it uses less digits than its factorization.

11655561516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 951 (or 949 counting only the distinct ones).

The product of its digits is 135000, while the sum is 42.

The spelling of 11655561516 in words is "eleven billion, six hundred fifty-five million, five hundred sixty-one thousand, five hundred sixteen".