165309011434 has 32 divisors (see below), whose sum is σ = 303192201600. Its totient is φ = 66017643840.

The previous prime is 165309011411. The next prime is 165309011437. The reversal of 165309011434 is 434110903561.

It is a super-2 number, since 2×165309011434² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 165309011393 and 165309011402.

It is not an unprimeable number, because it can be changed into a prime (165309011437) 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 15 ways as a sum of consecutive naturals, for example, 5077729 + ... + 5110180.

It is an arithmetic number, because the mean of its divisors is an integer number (9474756300).

Almost surely, 2^165309011434 is an apocalyptic number.

165309011434 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

165309011434 is a deficient number, since it is larger than the sum of its proper divisors (137883190166).

165309011434 is a wasteful number, since it uses less digits than its factorization.

165309011434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10187998.

The product of its (nonzero) digits is 38880, while the sum is 37.

Adding to 165309011434 its reverse (434110903561), we get a palindrome (599419914995).

The spelling of 165309011434 in words is "one hundred sixty-five billion, three hundred nine million, eleven thousand, four hundred thirty-four".