326640167140 has 288 divisors, whose sum is σ = 823689216000. Its totient is φ = 108457719552.

The previous prime is 326640167111. The next prime is 326640167173. The reversal of 326640167140 is 41761046623.

It is a junction number, because it is equal to n+sod(n) for n = 326640167093 and 326640167102.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1366695141 + ... + 1366695379.

It is an arithmetic number, because the mean of its divisors is an integer number (2860032000).

Almost surely, 2^326640167140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 326640167140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (411844608000).

326640167140 is an abundant number, since it is smaller than the sum of its proper divisors (497049048860).

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

326640167140 is a wasteful number, since it uses less digits than its factorization.

326640167140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607 (or 598 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 40.

The spelling of 326640167140 in words is "three hundred twenty-six billion, six hundred forty million, one hundred sixty-seven thousand, one hundred forty".