326199612634009 has 9 divisors (see below), whose sum is σ = 337836288713053. Its totient is φ = 314950844421472.

The previous prime is 326199612633991. The next prime is 326199612634033. The reversal of 326199612634009 is 900436216991623.

The square root of 326199612634009 is 18060997.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 135620814553225 + 190578798080784 = 11645635^2 + 13805028^2 .

It is not a de Polignac number, because 326199612634009 - 2¹⁵ = 326199612601241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (326199612634309) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 523457517 + ... + 524080309.

Almost surely, 2^{326199612634009} is an apocalyptic number.

326199612634009 is the 18060997-th square number.

326199612634009 is the 9030499-th centered octagonal number.

It is an amenable number.

326199612634009 is a deficient number, since it is larger than the sum of its proper divisors (11636676079044).

326199612634009 is an frugal number, since it uses more digits than its factorization.

326199612634009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1245644 (or 622822 counting only the distinct ones).

The product of its (nonzero) digits is 22674816, while the sum is 61.

The spelling of 326199612634009 in words is "three hundred twenty-six trillion, one hundred ninety-nine billion, six hundred twelve million, six hundred thirty-four thousand, nine".