67328641908 has 384 divisors, whose sum is σ = 206086809600. Its totient is φ = 18793036800.

The previous prime is 67328641843. The next prime is 67328641943. The reversal of 67328641908 is 80914682376.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 147327216 + ... + 147327672.

It is an arithmetic number, because the mean of its divisors is an integer number (536684400).

Almost surely, 2^67328641908 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 67328641908, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103043404800).

67328641908 is an abundant number, since it is smaller than the sum of its proper divisors (138758167692).

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

67328641908 is a wasteful number, since it uses less digits than its factorization.

67328641908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668 (or 660 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 54.

The spelling of 67328641908 in words is "sixty-seven billion, three hundred twenty-eight million, six hundred forty-one thousand, nine hundred eight".