67648271850 has 144 divisors (see below), whose sum is σ = 193078267200. Its totient is φ = 17599420800.

The previous prime is 67648271813. The next prime is 67648271879. The reversal of 67648271850 is 5817284676.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 430251 + ... + 566049.

It is an arithmetic number, because the mean of its divisors is an integer number (1340821300).

Almost surely, 2^67648271850 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67648271850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96539133600).

67648271850 is an abundant number, since it is smaller than the sum of its proper divisors (125429995350).

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

67648271850 is a wasteful number, since it uses less digits than its factorization.

67648271850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135867 (or 135850 counting only the distinct ones).

The product of its (nonzero) digits is 4515840, while the sum is 54.

The spelling of 67648271850 in words is "sixty-seven billion, six hundred forty-eight million, two hundred seventy-one thousand, eight hundred fifty".