165212661361151 has 2 divisors, whose sum is σ = 165212661361152. Its totient is φ = 165212661361150.

The previous prime is 165212661361147. The next prime is 165212661361159. The reversal of 165212661361151 is 151163166212561.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 165212661361151 - 2² = 165212661361147 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 165212661361096 and 165212661361105.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165212661361159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82606330680575 + 82606330680576.

It is an arithmetic number, because the mean of its divisors is an integer number (82606330680576).

Almost surely, 2^{165212661361151} is an apocalyptic number.

165212661361151 is a deficient number, since it is larger than the sum of its proper divisors (1).

165212661361151 is an equidigital number, since it uses as much as digits as its factorization.

165212661361151 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 388800, while the sum is 47.

The spelling of 165212661361151 in words is "one hundred sixty-five trillion, two hundred twelve billion, six hundred sixty-one million, three hundred sixty-one thousand, one hundred fifty-one".