326473532381 has 16 divisors (see below), whose sum is σ = 332986852656. Its totient is φ = 319999680000.

The previous prime is 326473532351. The next prime is 326473532423. The reversal of 326473532381 is 183235374623.

It can be written as a sum of positive squares in 8 ways, for example, as 3610928281 + 322862604100 = 60091^2 + 568210^2 .

It is a cyclic number.

It is not a de Polignac number, because 326473532381 - 2¹⁰ = 326473531357 is a prime.

It is a super-2 number, since 2×326473532381² (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 (326473532351) 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 15 ways as a sum of consecutive naturals, for example, 20999471 + ... + 21015011.

It is an arithmetic number, because the mean of its divisors is an integer number (20811678291).

Almost surely, 2^326473532381 is an apocalyptic number.

It is an amenable number.

326473532381 is a deficient number, since it is larger than the sum of its proper divisors (6513320275).

326473532381 is a wasteful number, since it uses less digits than its factorization.

326473532381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16784.

The product of its digits is 2177280, while the sum is 47.

The spelling of 326473532381 in words is "three hundred twenty-six billion, four hundred seventy-three million, five hundred thirty-two thousand, three hundred eighty-one".