326725771680 has 2304 divisors, whose sum is σ = 1569209241600. Its totient is φ = 59825848320.

The previous prime is 326725771679. The next prime is 326725771711. The reversal of 326725771680 is 86177527623.

It is a happy number.

326725771680 is a `hidden beast` number, since 3 + 2 + 6 + 7 + 2 + 577 + 1 + 68 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 2350545051 + ... + 2350545189.

It is an arithmetic number, because the mean of its divisors is an integer number (681080400).

Almost surely, 2^326725771680 is an apocalyptic number.

326725771680 is a gapful number since it is divisible by the number (30) 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 326725771680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (784604620800).

326725771680 is an abundant number, since it is smaller than the sum of its proper divisors (1242483469920).

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

326725771680 is a wasteful number, since it uses less digits than its factorization.

326725771680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267 (or 256 counting only the distinct ones).

The product of its (nonzero) digits is 5927040, while the sum is 54.

The spelling of 326725771680 in words is "three hundred twenty-six billion, seven hundred twenty-five million, seven hundred seventy-one thousand, six hundred eighty".