165206602070061 has 4 divisors (see below), whose sum is σ = 220275469426752. Its totient is φ = 110137734713372.

The previous prime is 165206602069867. The next prime is 165206602070123. The reversal of 165206602070061 is 160070206602561.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 165206602070061 - 2³³ = 165198012135469 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 165206602069995 and 165206602070022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165206602070261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27534433678341 + ... + 27534433678346.

It is an arithmetic number, because the mean of its divisors is an integer number (55068867356688).

Almost surely, 2^{165206602070061} is an apocalyptic number.

It is an amenable number.

165206602070061 is a deficient number, since it is larger than the sum of its proper divisors (55068867356691).

165206602070061 is an equidigital number, since it uses as much as digits as its factorization.

165206602070061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55068867356690.

The product of its (nonzero) digits is 181440, while the sum is 42.

The spelling of 165206602070061 in words is "one hundred sixty-five trillion, two hundred six billion, six hundred two million, seventy thousand, sixty-one".