11656653612 has 48 divisors (see below), whose sum is σ = 27497293824. Its totient is φ = 3843000000.

The previous prime is 11656653611. The next prime is 11656653643. The reversal of 11656653612 is 21635665611.

It is not an unprimeable number, because it can be changed into a prime (11656653611) 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, 1269237 + ... + 1278387.

It is an arithmetic number, because the mean of its divisors is an integer number (572860288).

Almost surely, 2^11656653612 is an apocalyptic number.

11656653612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11656653612 is an abundant number, since it is smaller than the sum of its proper divisors (15840640212).

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

11656653612 is a wasteful number, since it uses less digits than its factorization.

11656653612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10310 (or 10308 counting only the distinct ones).

The product of its digits is 194400, while the sum is 42.

The spelling of 11656653612 in words is "eleven billion, six hundred fifty-six million, six hundred fifty-three thousand, six hundred twelve".