326405664360 has 80 divisors (see below), whose sum is σ = 1097085716100. Its totient is φ = 87041509632.

The previous prime is 326405664341. The next prime is 326405664379. The reversal of 326405664360 is 63466504623.

326405664360 is a `hidden beast` number, since 3 + 2 + 6 + 40 + 566 + 43 + 6 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (326405664341) and next prime (326405664379).

It can be written as a sum of positive squares in 2 ways, for example, as 324414541476 + 1991122884 = 569574^2 + 44622^2 .

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 50368005 + ... + 50374484.

Almost surely, 2^326405664360 is an apocalyptic number.

326405664360 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

326405664360 is an abundant number, since it is smaller than the sum of its proper divisors (770680051740).

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

326405664360 is a wasteful number, since it uses less digits than its factorization.

326405664360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100742512 (or 100742499 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 45.

It can be divided in two parts, 32640 and 5664360, that added together give a triangular number (5697000 = T₃₃₇₅).

The spelling of 326405664360 in words is "three hundred twenty-six billion, four hundred five million, six hundred sixty-four thousand, three hundred sixty".