165211356587 has 2 divisors, whose sum is σ = 165211356588. Its totient is φ = 165211356586.

The previous prime is 165211356533. The next prime is 165211356589. The reversal of 165211356587 is 785653112561.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 165211356587 - 2¹⁰ = 165211355563 is a prime.

Together with 165211356589, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (165211356589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82605678293 + 82605678294.

It is an arithmetic number, because the mean of its divisors is an integer number (82605678294).

Almost surely, 2^165211356587 is an apocalyptic number.

165211356587 is a deficient number, since it is larger than the sum of its proper divisors (1).

165211356587 is an equidigital number, since it uses as much as digits as its factorization.

165211356587 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1512000, while the sum is 50.

The spelling of 165211356587 in words is "one hundred sixty-five billion, two hundred eleven million, three hundred fifty-six thousand, five hundred eighty-seven".