6656016601655 has 8 divisors (see below), whose sum is σ = 8407599918000. Its totient is φ = 5044559950656.

The previous prime is 6656016601651. The next prime is 6656016601673. The reversal of 6656016601655 is 5561066106566.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6656016601655 - 2² = 6656016601651 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6656016601597 and 6656016601606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6656016601651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35031666230 + ... + 35031666419.

It is an arithmetic number, because the mean of its divisors is an integer number (1050949989750).

Almost surely, 2^{6656016601655} is an apocalyptic number.

6656016601655 is a deficient number, since it is larger than the sum of its proper divisors (1751583316345).

6656016601655 is a wasteful number, since it uses less digits than its factorization.

6656016601655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70063332673.

The product of its (nonzero) digits is 5832000, while the sum is 53.

The spelling of 6656016601655 in words is "six trillion, six hundred fifty-six billion, sixteen million, six hundred one thousand, six hundred fifty-five".