326465600640 has 64 divisors (see below), whose sum is σ = 1040609108160. Its totient is φ = 87057492992.

The previous prime is 326465600639. The next prime is 326465600683. The reversal of 326465600640 is 46006564623.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 326465600592 and 326465600601.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85015164 + ... + 85019003.

It is an arithmetic number, because the mean of its divisors is an integer number (16259517315).

Almost surely, 2^326465600640 is an apocalyptic number.

326465600640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

326465600640 is an abundant number, since it is smaller than the sum of its proper divisors (714143507520).

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

326465600640 is a wasteful number, since it uses less digits than its factorization.

326465600640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170034189 (or 170034177 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 42.

The spelling of 326465600640 in words is "three hundred twenty-six billion, four hundred sixty-five million, six hundred thousand, six hundred forty".