6655221712167 has 16 divisors (see below), whose sum is σ = 10357062362112. Its totient is φ = 3722069285280.

The previous prime is 6655221712147. The next prime is 6655221712189. The reversal of 6655221712167 is 7612171225566.

6655221712167 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6655221712167 - 2²⁸ = 6654953276711 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6655221712147) 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, 3371438584 + ... + 3371440557.

It is an arithmetic number, because the mean of its divisors is an integer number (647316397632).

Almost surely, 2^{6655221712167} is an apocalyptic number.

6655221712167 is a deficient number, since it is larger than the sum of its proper divisors (3701840649945).

6655221712167 is a wasteful number, since it uses less digits than its factorization.

6655221712167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6742879198.

The product of its digits is 2116800, while the sum is 51.

The spelling of 6655221712167 in words is "six trillion, six hundred fifty-five billion, two hundred twenty-one million, seven hundred twelve thousand, one hundred sixty-seven".