165153433545131 has 16 divisors (see below), whose sum is σ = 171032885045568. Its totient is φ = 159371299392000.

The previous prime is 165153433545097. The next prime is 165153433545167. The reversal of 165153433545131 is 131545334351561.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 165153433545131 - 2⁴² = 160755387034027 is a prime.

It is a super-2 number, since 2×165153433545131² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 165153433545131.

It is not an unprimeable number, because it can be changed into a prime (165153433545731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55802936 + ... + 58687941.

It is an arithmetic number, because the mean of its divisors is an integer number (10689555315348).

Almost surely, 2^{165153433545131} is an apocalyptic number.

165153433545131 is a deficient number, since it is larger than the sum of its proper divisors (5879451500437).

165153433545131 is a wasteful number, since it uses less digits than its factorization.

165153433545131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114491302.

The product of its digits is 4860000, while the sum is 50.

Adding to 165153433545131 its reverse (131545334351561), we get a palindrome (296698767896692).

The spelling of 165153433545131 in words is "one hundred sixty-five trillion, one hundred fifty-three billion, four hundred thirty-three million, five hundred forty-five thousand, one hundred thirty-one".