6671167655 has 4 divisors (see below), whose sum is σ = 8005401192. Its totient is φ = 5336934120.

The previous prime is 6671167651. The next prime is 6671167663. The reversal of 6671167655 is 5567611766.

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

It is not a de Polignac number, because 6671167655 - 2² = 6671167651 is a prime.

It is a super-2 number, since 2×6671167655² = 89008955762236398050, 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 (6671167651) by changing a digit.

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, 667116761 + ... + 667116770.

It is an arithmetic number, because the mean of its divisors is an integer number (2001350298).

Almost surely, 2^6671167655 is an apocalyptic number.

6671167655 is a deficient number, since it is larger than the sum of its proper divisors (1334233537).

6671167655 is a wasteful number, since it uses less digits than its factorization.

6671167655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1334233536.

The product of its digits is 1587600, while the sum is 50.

The square root of 6671167655 is about 81677.2162539836. The cubic root of 6671167655 is about 1882.4955216948.

The spelling of 6671167655 in words is "six billion, six hundred seventy-one million, one hundred sixty-seven thousand, six hundred fifty-five".