11656510516 has 12 divisors (see below), whose sum is σ = 23313021088. Its totient is φ = 4995647352.

The previous prime is 11656510511. The next prime is 11656510529. The reversal of 11656510516 is 61501565611.

11656510516 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11656510511) 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, 208151946 + ... + 208152001.

Almost surely, 2^11656510516 is an apocalyptic number.

It is an amenable number.

11656510516 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

11656510516 is a wasteful number, since it uses less digits than its factorization.

11656510516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416303958 (or 416303956 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 37.

The spelling of 11656510516 in words is "eleven billion, six hundred fifty-six million, five hundred ten thousand, five hundred sixteen".