67866374928 has 160 divisors (see below), whose sum is σ = 196584560640. Its totient is φ = 19998650880.

The previous prime is 67866374921. The next prime is 67866374969. The reversal of 67866374928 is 82947366876.

67866374928 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is not an unprimeable number, because it can be changed into a prime (67866374921) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3887403 + ... + 3904821.

It is an arithmetic number, because the mean of its divisors is an integer number (1228653504).

Almost surely, 2^67866374928 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 67866374928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98292280320).

67866374928 is an abundant number, since it is smaller than the sum of its proper divisors (128718185712).

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

67866374928 is a wasteful number, since it uses less digits than its factorization.

67866374928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17645 (or 17639 counting only the distinct ones).

The product of its digits is 146313216, while the sum is 66.

The spelling of 67866374928 in words is "sixty-seven billion, eight hundred sixty-six million, three hundred seventy-four thousand, nine hundred twenty-eight".