326965458661 has 4 divisors (see below), whose sum is σ = 341181348192. Its totient is φ = 312749569132.

The previous prime is 326965458649. The next prime is 326965458713. The reversal of 326965458661 is 166854569623.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 166854569623 = 7 ⋅23836367089.

It is a cyclic number.

It is not a de Polignac number, because 326965458661 - 2¹¹ = 326965456613 is a prime.

It is a super-2 number, since 2×326965458661² (a number of 24 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 326965458661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (326965458361) 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, 7107944731 + ... + 7107944776.

It is an arithmetic number, because the mean of its divisors is an integer number (85295337048).

Almost surely, 2^326965458661 is an apocalyptic number.

It is an amenable number.

326965458661 is a deficient number, since it is larger than the sum of its proper divisors (14215889531).

326965458661 is a wasteful number, since it uses less digits than its factorization.

326965458661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14215889530.

The product of its digits is 55987200, while the sum is 61.

The spelling of 326965458661 in words is "three hundred twenty-six billion, nine hundred sixty-five million, four hundred fifty-eight thousand, six hundred sixty-one".