326934635581 has 8 divisors (see below), whose sum is σ = 327490968384. Its totient is φ = 326378424960.

The previous prime is 326934635551. The next prime is 326934635591. The reversal of 326934635581 is 185536439623.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 326934635581 - 2¹¹ = 326934633533 is a prime.

It is a super-2 number, since 2×326934635581² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (326934635551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6497586 + ... + 6547708.

It is an arithmetic number, because the mean of its divisors is an integer number (40936371048).

Almost surely, 2^326934635581 is an apocalyptic number.

It is an amenable number.

326934635581 is a deficient number, since it is larger than the sum of its proper divisors (556332803).

326934635581 is a wasteful number, since it uses less digits than its factorization.

326934635581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61091.

The product of its digits is 13996800, while the sum is 55.

The spelling of 326934635581 in words is "three hundred twenty-six billion, nine hundred thirty-four million, six hundred thirty-five thousand, five hundred eighty-one".