165485556386 has 8 divisors (see below), whose sum is σ = 251017417260. Its totient is φ = 81813083968.

The previous prime is 165485556349. The next prime is 165485556421. The reversal of 165485556386 is 683655584561.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 165257697361 + 227859025 = 406519^2 + 15095^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 464846891 + ... + 464847246.

Almost surely, 2^165485556386 is an apocalyptic number.

165485556386 is a deficient number, since it is larger than the sum of its proper divisors (85531860874).

165485556386 is an equidigital number, since it uses as much as digits as its factorization.

165485556386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 929694228.

The product of its digits is 103680000, while the sum is 62.

The spelling of 165485556386 in words is "one hundred sixty-five billion, four hundred eighty-five million, five hundred fifty-six thousand, three hundred eighty-six".