5271661646 has 8 divisors (see below), whose sum is σ = 7936672224. Its totient is φ = 2626104240.

The previous prime is 5271661627. The next prime is 5271661651. The reversal of 5271661646 is 6461661725.

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

It is a junction number, because it is equal to n+sod(n) for n = 5271661597 and 5271661606.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4862615 + ... + 4863698.

It is an arithmetic number, because the mean of its divisors is an integer number (992084028).

Almost surely, 2^5271661646 is an apocalyptic number.

5271661646 is a deficient number, since it is larger than the sum of its proper divisors (2665010578).

5271661646 is a wasteful number, since it uses less digits than its factorization.

5271661646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9726586.

The product of its digits is 362880, while the sum is 44.

The square root of 5271661646 is about 72606.2094176524. The cubic root of 5271661646 is about 1740.4004061566.

The spelling of 5271661646 in words is "five billion, two hundred seventy-one million, six hundred sixty-one thousand, six hundred forty-six".