326640485947204 has 135 divisors (see below), whose sum is σ = 680807953524993. Its totient is φ = 137023757956800.

The previous prime is 326640485947201. The next prime is 326640485947283. The reversal of 326640485947204 is 402749584046623.

The square root of 326640485947204 is 18073198.

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

It can be written as a sum of positive squares in 7 ways, for example, as 251086145107204 + 75554340840000 = 15845698^2 + 8692200^2 .

It is a super-4 number, since 4×326640485947204⁴ (a number of 59 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (326640485947201) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 67196147734 + ... + 67196152594.

Almost surely, 2^{326640485947204} is an apocalyptic number.

326640485947204 is the 18073198-th square number.

It is an amenable number.

326640485947204 is an abundant number, since it is smaller than the sum of its proper divisors (354167467577789).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

326640485947204 is an frugal number, since it uses more digits than its factorization.

326640485947204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9800 (or 4887 counting only the distinct ones).

The product of its (nonzero) digits is 278691840, while the sum is 64.

The spelling of 326640485947204 in words is "three hundred twenty-six trillion, six hundred forty billion, four hundred eighty-five million, nine hundred forty-seven thousand, two hundred four".