165915909883 has 2 divisors, whose sum is σ = 165915909884. Its totient is φ = 165915909882.

The previous prime is 165915909857. The next prime is 165915909979. The reversal of 165915909883 is 388909519561.

It is a weak prime.

It is an emirp because it is prime and its reverse (388909519561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 165915909883 - 2¹⁷ = 165915778811 is a prime.

It is not a weakly prime, because it can be changed into another prime (165915909683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82957954941 + 82957954942.

It is an arithmetic number, because the mean of its divisors is an integer number (82957954942).

Almost surely, 2^165915909883 is an apocalyptic number.

165915909883 is a deficient number, since it is larger than the sum of its proper divisors (1).

165915909883 is an equidigital number, since it uses as much as digits as its factorization.

165915909883 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20995200, while the sum is 64.

The spelling of 165915909883 in words is "one hundred sixty-five billion, nine hundred fifteen million, nine hundred nine thousand, eight hundred eighty-three".