67996223856 has 360 divisors, whose sum is σ = 225893041920. Its totient is φ = 18882720000.

The previous prime is 67996223851. The next prime is 67996223861. The reversal of 67996223856 is 65832269976.

It is an interprime number because it is at equal distance from previous prime (67996223851) and next prime (67996223861).

It is a junction number, because it is equal to n+sod(n) for n = 67996223793 and 67996223802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67996223851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 28921081 + ... + 28923431.

It is an arithmetic number, because the mean of its divisors is an integer number (627480672).

Almost surely, 2^67996223856 is an apocalyptic number.

67996223856 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67996223856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112946520960).

67996223856 is an abundant number, since it is smaller than the sum of its proper divisors (157896818064).

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

67996223856 is a wasteful number, since it uses less digits than its factorization.

67996223856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2457 (or 2417 counting only the distinct ones).

The product of its digits is 58786560, while the sum is 63.

The spelling of 67996223856 in words is "sixty-seven billion, nine hundred ninety-six million, two hundred twenty-three thousand, eight hundred fifty-six".