66422604167 has 2 divisors, whose sum is σ = 66422604168. Its totient is φ = 66422604166.

The previous prime is 66422604133. The next prime is 66422604217. The reversal of 66422604167 is 76140622466.

66422604167 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66422604167 - 2¹⁴ = 66422587783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66422604767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33211302083 + 33211302084.

It is an arithmetic number, because the mean of its divisors is an integer number (33211302084).

Almost surely, 2^66422604167 is an apocalyptic number.

66422604167 is a deficient number, since it is larger than the sum of its proper divisors (1).

66422604167 is an equidigital number, since it uses as much as digits as its factorization.

66422604167 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 580608, while the sum is 44.

The spelling of 66422604167 in words is "sixty-six billion, four hundred twenty-two million, six hundred four thousand, one hundred sixty-seven".