11666061516 has 12 divisors (see below), whose sum is σ = 27220810232. Its totient is φ = 3888687168.

The previous prime is 11666061497. The next prime is 11666061523. The reversal of 11666061516 is 61516066611.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 486085885 + ... + 486085908.

Almost surely, 2^11666061516 is an apocalyptic number.

It is an amenable number.

11666061516 is an abundant number, since it is smaller than the sum of its proper divisors (15554748716).

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

11666061516 is a wasteful number, since it uses less digits than its factorization.

11666061516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 972171800 (or 972171798 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 39.

The spelling of 11666061516 in words is "eleven billion, six hundred sixty-six million, sixty-one thousand, five hundred sixteen".