326431136165153 has 4 divisors (see below), whose sum is σ = 328621949159700. Its totient is φ = 324240323170608.

The previous prime is 326431136165149. The next prime is 326431136165191. The reversal of 326431136165153 is 351561631134623.

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

It can be written as a sum of positive squares in 2 ways, for example, as 205348556080144 + 121082580085009 = 14329988^2 + 11003753^2 .

It is a cyclic number.

It is not a de Polignac number, because 326431136165153 - 2² = 326431136165149 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (326431136165353) 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 3 ways as a sum of consecutive naturals, for example, 1095406497050 + ... + 1095406497347.

It is an arithmetic number, because the mean of its divisors is an integer number (82155487289925).

Almost surely, 2^{326431136165153} is an apocalyptic number.

It is an amenable number.

326431136165153 is a deficient number, since it is larger than the sum of its proper divisors (2190812994547).

326431136165153 is a wasteful number, since it uses less digits than its factorization.

326431136165153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2190812994546.

The product of its digits is 3499200, while the sum is 50.

Adding to 326431136165153 its reverse (351561631134623), we get a palindrome (677992767299776).

The spelling of 326431136165153 in words is "three hundred twenty-six trillion, four hundred thirty-one billion, one hundred thirty-six million, one hundred sixty-five thousand, one hundred fifty-three".