67999305444 has 96 divisors (see below), whose sum is σ = 187746612480. Its totient is φ = 18742198272.

The previous prime is 67999305433. The next prime is 67999305461. The reversal of 67999305444 is 44450399976.

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 31 ways as a sum of consecutive naturals, for example, 2953144 + ... + 2976080.

It is an arithmetic number, because the mean of its divisors is an integer number (1955693880).

Almost surely, 2^67999305444 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 67999305444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93873306240).

67999305444 is an abundant number, since it is smaller than the sum of its proper divisors (119747307036).

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

67999305444 is a wasteful number, since it uses less digits than its factorization.

67999305444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24197 (or 24195 counting only the distinct ones).

The product of its (nonzero) digits is 29393280, while the sum is 60.

The spelling of 67999305444 in words is "sixty-seven billion, nine hundred ninety-nine million, three hundred five thousand, four hundred forty-four".