165106322664061 has 4 divisors (see below), whose sum is σ = 165166295904252. Its totient is φ = 165046349423872.

The previous prime is 165106322664053. The next prime is 165106322664071. The reversal of 165106322664061 is 160466223601561.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 161796492005625 + 3309830658436 = 12719925^2 + 1819294^2 .

It is a cyclic number.

It is not a de Polignac number, because 165106322664061 - 2³ = 165106322664053 is a prime.

It is a super-2 number, since 2×165106322664061² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 165106322663996 and 165106322664014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165106322664071) 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, 29986615966 + ... + 29986621471.

It is an arithmetic number, because the mean of its divisors is an integer number (41291573976063).

Almost surely, 2^{165106322664061} is an apocalyptic number.

It is an amenable number.

165106322664061 is a deficient number, since it is larger than the sum of its proper divisors (59973240191).

165106322664061 is an equidigital number, since it uses as much as digits as its factorization.

165106322664061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59973240190.

The product of its (nonzero) digits is 1866240, while the sum is 49.

The spelling of 165106322664061 in words is "one hundred sixty-five trillion, one hundred six billion, three hundred twenty-two million, six hundred sixty-four thousand, sixty-one".