6651671716 has 6 divisors (see below), whose sum is σ = 11640425510. Its totient is φ = 3325835856.

The previous prime is 6651671701. The next prime is 6651671717. The reversal of 6651671716 is 6171761566.

It can be written as a sum of positive squares in only one way, i.e., 6352727616 + 298944100 = 79704^2 + 17290^2 .

It is not an unprimeable number, because it can be changed into a prime (6651671717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 831458961 + ... + 831458968.

Almost surely, 2^6651671716 is an apocalyptic number.

It is an amenable number.

6651671716 is a deficient number, since it is larger than the sum of its proper divisors (4988753794).

6651671716 is a wasteful number, since it uses less digits than its factorization.

6651671716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1662917933 (or 1662917931 counting only the distinct ones).

The product of its digits is 317520, while the sum is 46.

The square root of 6651671716 is about 81557.7814558488. The cubic root of 6651671716 is about 1880.6599196023.

The spelling of 6651671716 in words is "six billion, six hundred fifty-one million, six hundred seventy-one thousand, seven hundred sixteen".