165500609001967 has 2 divisors, whose sum is σ = 165500609001968. Its totient is φ = 165500609001966.

The previous prime is 165500609001901. The next prime is 165500609001989. The reversal of 165500609001967 is 769100906005561.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165500609001967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165500609001067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82750304500983 + 82750304500984.

It is an arithmetic number, because the mean of its divisors is an integer number (82750304500984).

Almost surely, 2^{165500609001967} is an apocalyptic number.

165500609001967 is a deficient number, since it is larger than the sum of its proper divisors (1).

165500609001967 is an equidigital number, since it uses as much as digits as its factorization.

165500609001967 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3061800, while the sum is 55.

The spelling of 165500609001967 in words is "one hundred sixty-five trillion, five hundred billion, six hundred nine million, one thousand, nine hundred sixty-seven".