165563130116109 has 32 divisors (see below), whose sum is σ = 243745726694400. Its totient is φ = 99122112440960.

The previous prime is 165563130116057. The next prime is 165563130116119. The reversal of 165563130116109 is 901611031365561.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 165563130116109 - 2²⁸ = 165562861680653 is a prime.

It is a super-2 number, since 2×165563130116109² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165563130116119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23418832 + ... + 29657510.

It is an arithmetic number, because the mean of its divisors is an integer number (7617053959200).

Almost surely, 2^{165563130116109} is an apocalyptic number.

It is an amenable number.

165563130116109 is a deficient number, since it is larger than the sum of its proper divisors (78182596578291).

165563130116109 is a wasteful number, since it uses less digits than its factorization.

165563130116109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6248465.

The product of its (nonzero) digits is 437400, while the sum is 48.

The spelling of 165563130116109 in words is "one hundred sixty-five trillion, five hundred sixty-three billion, one hundred thirty million, one hundred sixteen thousand, one hundred nine".