6661414156 has 12 divisors (see below), whose sum is σ = 11941803720. Its totient is φ = 3249470240.

The previous prime is 6661414121. The next prime is 6661414159. The reversal of 6661414156 is 6514141666.

It is not an unprimeable number, because it can be changed into a prime (6661414159) 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, 20309026 + ... + 20309353.

It is an arithmetic number, because the mean of its divisors is an integer number (995150310).

Almost surely, 2^6661414156 is an apocalyptic number.

It is an amenable number.

6661414156 is a deficient number, since it is larger than the sum of its proper divisors (5280389564).

6661414156 is a wasteful number, since it uses less digits than its factorization.

6661414156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40618424 (or 40618422 counting only the distinct ones).

The product of its digits is 103680, while the sum is 40.

The square root of 6661414156 is about 81617.4868272725. The cubic root of 6661414156 is about 1881.5776477167.

The spelling of 6661414156 in words is "six billion, six hundred sixty-one million, four hundred fourteen thousand, one hundred fifty-six".