6648841551 has 16 divisors (see below), whose sum is σ = 10180045440. Its totient is φ = 3817516320.

The previous prime is 6648841543. The next prime is 6648841561. The reversal of 6648841551 is 1551488466.

It is not a de Polignac number, because 6648841551 - 2³ = 6648841543 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6648841551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6648841531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5301480 + ... + 5302733.

It is an arithmetic number, because the mean of its divisors is an integer number (636252840).

Almost surely, 2^6648841551 is an apocalyptic number.

6648841551 is a deficient number, since it is larger than the sum of its proper divisors (3531203889).

6648841551 is a wasteful number, since it uses less digits than its factorization.

6648841551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10604246.

The product of its digits is 921600, while the sum is 48.

The square root of 6648841551 is about 81540.4289355900. The cubic root of 6648841551 is about 1880.3931529320.

It can be divided in two parts, 66488415 and 51, that added together give a palindrome (66488466).

The spelling of 6648841551 in words is "six billion, six hundred forty-eight million, eight hundred forty-one thousand, five hundred fifty-one".