6651331567 has 4 divisors (see below), whose sum is σ = 6940519920. Its totient is φ = 6362143216.

The previous prime is 6651331543. The next prime is 6651331591. The reversal of 6651331567 is 7651331566.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7651331566 = 2 ⋅3825665783.

It is an interprime number because it is at equal distance from previous prime (6651331543) and next prime (6651331591).

It is a cyclic number.

It is not a de Polignac number, because 6651331567 - 2⁷ = 6651331439 is a prime.

It is a super-2 number, since 2×6651331567² = 88480423228341350978, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6651331537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144594142 + ... + 144594187.

It is an arithmetic number, because the mean of its divisors is an integer number (1735129980).

Almost surely, 2^6651331567 is an apocalyptic number.

6651331567 is a deficient number, since it is larger than the sum of its proper divisors (289188353).

6651331567 is a wasteful number, since it uses less digits than its factorization.

6651331567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289188352.

The product of its digits is 340200, while the sum is 43.

The square root of 6651331567 is about 81555.6961039509. The cubic root of 6651331567 is about 1880.6278617216.

Subtracting 6651331567 from its reverse (7651331566), we obtain a palindrome (999999999).

The spelling of 6651331567 in words is "six billion, six hundred fifty-one million, three hundred thirty-one thousand, five hundred sixty-seven".