6648223471551 has 24 divisors (see below), whose sum is σ = 9644251668480. Its totient is φ = 4413109050000.

The previous prime is 6648223471537. The next prime is 6648223471559. The reversal of 6648223471551 is 1551743228466.

6648223471551 is a `hidden beast` number, since 6 + 6 + 4 + 82 + 2 + 3 + 4 + 7 + 1 + 551 = 666.

It is not a de Polignac number, because 6648223471551 - 2¹³ = 6648223463359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6648223471559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19514926 + ... + 19852676.

It is an arithmetic number, because the mean of its divisors is an integer number (401843819520).

Almost surely, 2^{6648223471551} is an apocalyptic number.

6648223471551 is a deficient number, since it is larger than the sum of its proper divisors (2996028196929).

6648223471551 is a wasteful number, since it uses less digits than its factorization.

6648223471551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347147 (or 347144 counting only the distinct ones).

The product of its digits is 9676800, while the sum is 54.

The spelling of 6648223471551 in words is "six trillion, six hundred forty-eight billion, two hundred twenty-three million, four hundred seventy-one thousand, five hundred fifty-one".