165536377 has 4 divisors (see below), whose sum is σ = 165573520. Its totient is φ = 165499236.

The previous prime is 165536323. The next prime is 165536387. The reversal of 165536377 is 773635561.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-165536377 is a prime.

It is a super-2 number, since 2×165536377² = 54804584220572258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165536387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10803 + ... + 21160.

It is an arithmetic number, because the mean of its divisors is an integer number (41393380).

Almost surely, 2^165536377 is an apocalyptic number.

It is an amenable number.

165536377 is a deficient number, since it is larger than the sum of its proper divisors (37143).

165536377 is an equidigital number, since it uses as much as digits as its factorization.

165536377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37142.

The product of its digits is 396900, while the sum is 43.

The square root of 165536377 is about 12866.0940848418. The cubic root of 165536377 is about 549.0743404937.

The spelling of 165536377 in words is "one hundred sixty-five million, five hundred thirty-six thousand, three hundred seventy-seven".