68744380672 has 144 divisors (see below), whose sum is σ = 151754932224. Its totient is φ = 30820608000.

The previous prime is 68744380637. The next prime is 68744380703. The reversal of 68744380672 is 27608344786.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75459897 + ... + 75460807.

It is an arithmetic number, because the mean of its divisors is an integer number (1053853696).

Almost surely, 2^68744380672 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 68744380672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75877466112).

68744380672 is an abundant number, since it is smaller than the sum of its proper divisors (83010551552).

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

68744380672 is a wasteful number, since it uses less digits than its factorization.

68744380672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1276 (or 1262 counting only the distinct ones).

The product of its (nonzero) digits is 10838016, while the sum is 55.

The spelling of 68744380672 in words is "sixty-eight billion, seven hundred forty-four million, three hundred eighty thousand, six hundred seventy-two".