6656168136 has 16 divisors (see below), whose sum is σ = 16640420400. Its totient is φ = 2218722704.

The previous prime is 6656168087. The next prime is 6656168143. The reversal of 6656168136 is 6318616566.

It is a happy number.

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, 138670146 + ... + 138670193.

It is an arithmetic number, because the mean of its divisors is an integer number (1040026275).

Almost surely, 2^6656168136 is an apocalyptic number.

It is an amenable number.

6656168136 is an abundant number, since it is smaller than the sum of its proper divisors (9984252264).

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

6656168136 is a wasteful number, since it uses less digits than its factorization.

6656168136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277340348 (or 277340344 counting only the distinct ones).

The product of its digits is 933120, while the sum is 48.

The square root of 6656168136 is about 81585.3426541802. The cubic root of 6656168136 is about 1881.0835891462.

The spelling of 6656168136 in words is "six billion, six hundred fifty-six million, one hundred sixty-eight thousand, one hundred thirty-six".