6648318143 has 4 divisors (see below), whose sum is σ = 6747546840. Its totient is φ = 6549089448.

The previous prime is 6648318133. The next prime is 6648318167. The reversal of 6648318143 is 3418138466.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6648318143 - 2¹² = 6648314047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6648318094 and 6648318103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6648318133) 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, 49614248 + ... + 49614381.

It is an arithmetic number, because the mean of its divisors is an integer number (1686886710).

Almost surely, 2^6648318143 is an apocalyptic number.

6648318143 is a deficient number, since it is larger than the sum of its proper divisors (99228697).

6648318143 is an equidigital number, since it uses as much as digits as its factorization.

6648318143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99228696.

The product of its digits is 331776, while the sum is 44.

The square root of 6648318143 is about 81537.2193725050. The cubic root of 6648318143 is about 1880.3438090657.

The spelling of 6648318143 in words is "six billion, six hundred forty-eight million, three hundred eighteen thousand, one hundred forty-three".