326563405316261 has 8 divisors (see below), whose sum is σ = 326593043881344. Its totient is φ = 326533768140160.

The previous prime is 326563405316233. The next prime is 326563405316311. The reversal of 326563405316261 is 162613504365623.

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 326563405316261 - 2¹⁴ = 326563405299877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (326563405316761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 502356506 + ... + 503006148.

It is an arithmetic number, because the mean of its divisors is an integer number (40824130485168).

Almost surely, 2^{326563405316261} is an apocalyptic number.

It is an amenable number.

326563405316261 is a deficient number, since it is larger than the sum of its proper divisors (29638565083).

326563405316261 is a wasteful number, since it uses less digits than its factorization.

326563405316261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694491.

The product of its (nonzero) digits is 13996800, while the sum is 53.

The spelling of 326563405316261 in words is "three hundred twenty-six trillion, five hundred sixty-three billion, four hundred five million, three hundred sixteen thousand, two hundred sixty-one".