164121917207 has 2 divisors, whose sum is σ = 164121917208. Its totient is φ = 164121917206.

The previous prime is 164121917161. The next prime is 164121917209. The reversal of 164121917207 is 702719121461.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 164121917207 - 2¹⁰ = 164121916183 is a prime.

Together with 164121917209, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164121917209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82060958603 + 82060958604.

It is an arithmetic number, because the mean of its divisors is an integer number (82060958604).

Almost surely, 2^164121917207 is an apocalyptic number.

164121917207 is a deficient number, since it is larger than the sum of its proper divisors (1).

164121917207 is an equidigital number, since it uses as much as digits as its factorization.

164121917207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42336, while the sum is 41.

The spelling of 164121917207 in words is "one hundred sixty-four billion, one hundred twenty-one million, nine hundred seventeen thousand, two hundred seven".