326181987168 has 48 divisors (see below), whose sum is σ = 856263070656. Its totient is φ = 108722839680.

The previous prime is 326181987161. The next prime is 326181987191. The reversal of 326181987168 is 861789181623.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (326181987161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2933223 + ... + 3042393.

It is an arithmetic number, because the mean of its divisors is an integer number (17838813972).

Almost surely, 2^326181987168 is an apocalyptic number.

It is an amenable number.

326181987168 is an abundant number, since it is smaller than the sum of its proper divisors (530081083488).

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

326181987168 is a wasteful number, since it uses less digits than its factorization.

326181987168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140307 (or 140299 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 60.

The spelling of 326181987168 in words is "three hundred twenty-six billion, one hundred eighty-one million, nine hundred eighty-seven thousand, one hundred sixty-eight".