326910684672 has 640 divisors, whose sum is σ = 1155916016640. Its totient is φ = 89911296000.

The previous prime is 326910684647. The next prime is 326910684677. The reversal of 326910684672 is 276486019623.

326910684672 is a `hidden beast` number, since 32 + 6 + 91 + 0 + 68 + 467 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (326910684677) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 120585397 + ... + 120588107.

It is an arithmetic number, because the mean of its divisors is an integer number (1806118776).

Almost surely, 2^326910684672 is an apocalyptic number.

326910684672 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 326910684672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (577958008320).

326910684672 is an abundant number, since it is smaller than the sum of its proper divisors (829005331968).

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

326910684672 is a wasteful number, since it uses less digits than its factorization.

326910684672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2823 (or 2801 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 54.

The spelling of 326910684672 in words is "three hundred twenty-six billion, nine hundred ten million, six hundred eighty-four thousand, six hundred seventy-two".