326551564320 has 96 divisors (see below), whose sum is σ = 1036737128448. Its totient is φ = 86394728448.

The previous prime is 326551564319. The next prime is 326551564321. The reversal of 326551564320 is 23465155623.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (326551564319) and next prime (326551564321).

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (326551564321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2617449 + ... + 2739368.

It is an arithmetic number, because the mean of its divisors is an integer number (10799345088).

Almost surely, 2^326551564320 is an apocalyptic number.

326551564320 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

326551564320 is an abundant number, since it is smaller than the sum of its proper divisors (710185564128).

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

326551564320 is a wasteful number, since it uses less digits than its factorization.

326551564320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5356962 (or 5356954 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 42.

The spelling of 326551564320 in words is "three hundred twenty-six billion, five hundred fifty-one million, five hundred sixty-four thousand, three hundred twenty".