165114643522331 has 4 divisors (see below), whose sum is σ = 170440922345664. Its totient is φ = 159788364699000.

The previous prime is 165114643522307. The next prime is 165114643522403. The reversal of 165114643522331 is 133225346411561.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165114643522331 is a prime.

It is a super-2 number, since 2×165114643522331² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165114643522931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2663139411620 + ... + 2663139411681.

It is an arithmetic number, because the mean of its divisors is an integer number (42610230586416).

Almost surely, 2^{165114643522331} is an apocalyptic number.

165114643522331 is a deficient number, since it is larger than the sum of its proper divisors (5326278823333).

165114643522331 is an equidigital number, since it uses as much as digits as its factorization.

165114643522331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5326278823332.

The product of its digits is 1555200, while the sum is 47.

Adding to 165114643522331 its reverse (133225346411561), we get a palindrome (298339989933892).

The spelling of 165114643522331 in words is "one hundred sixty-five trillion, one hundred fourteen billion, six hundred forty-three million, five hundred twenty-two thousand, three hundred thirty-one".