326966620672 has 40 divisors (see below), whose sum is σ = 663045370416. Its totient is φ = 161043244032.

The previous prime is 326966620661. The next prime is 326966620723. The reversal of 326966620672 is 276026669623.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4731418 + ... + 4800025.

Almost surely, 2^326966620672 is an apocalyptic number.

326966620672 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

326966620672 is an abundant number, since it is smaller than the sum of its proper divisors (336078749744).

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

326966620672 is an frugal number, since it uses more digits than its factorization.

326966620672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9531528 (or 9531512 counting only the distinct ones).

The product of its (nonzero) digits is 11757312, while the sum is 55.

The spelling of 326966620672 in words is "three hundred twenty-six billion, nine hundred sixty-six million, six hundred twenty thousand, six hundred seventy-two".