165642302808 has 64 divisors (see below), whose sum is σ = 460863612000. Its totient is φ = 55124568576.

The previous prime is 165642302801. The next prime is 165642302867. The reversal of 165642302808 is 808203246561.

165642302808 is a `hidden beast` number, since 1 + 6 + 564 + 2 + 3 + 0 + 2 + 80 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165642302801) 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 15 ways as a sum of consecutive naturals, for example, 488173 + ... + 754716.

Almost surely, 2^165642302808 is an apocalyptic number.

165642302808 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

165642302808 is an abundant number, since it is smaller than the sum of its proper divisors (295221309192).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165642302808 is a wasteful number, since it uses less digits than its factorization.

165642302808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1243521 (or 1243511 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The spelling of 165642302808 in words is "one hundred sixty-five billion, six hundred forty-two million, three hundred two thousand, eight hundred eight".