68774561744 has 80 divisors (see below), whose sum is σ = 160374259200. Its totient is φ = 27910852992.

The previous prime is 68774561717. The next prime is 68774561761. The reversal of 68774561744 is 44716547786.

It is a congruent number.

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, 5754527 + ... + 5766465.

It is an arithmetic number, because the mean of its divisors is an integer number (2004678240).

Almost surely, 2^68774561744 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 68774561744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80187129600).

68774561744 is an abundant number, since it is smaller than the sum of its proper divisors (91599697456).

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

68774561744 is a wasteful number, since it uses less digits than its factorization.

68774561744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14680 (or 14674 counting only the distinct ones).

The product of its digits is 31610880, while the sum is 59.

The spelling of 68774561744 in words is "sixty-eight billion, seven hundred seventy-four million, five hundred sixty-one thousand, seven hundred forty-four".