768991383744 has 112 divisors (see below), whose sum is σ = 2090015355648. Its totient is φ = 249354574848.

The previous prime is 768991383731. The next prime is 768991383767. The reversal of 768991383744 is 447383199867.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 69379227 + ... + 69390309.

Almost surely, 2^768991383744 is an apocalyptic number.

768991383744 is a gapful number since it is divisible by the number (74) 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 768991383744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1045007677824).

768991383744 is an abundant number, since it is smaller than the sum of its proper divisors (1321023971904).

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

768991383744 is a wasteful number, since it uses less digits than its factorization.

768991383744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20902 (or 20892 counting only the distinct ones).

The product of its digits is 219469824, while the sum is 69.

The spelling of 768991383744 in words is "seven hundred sixty-eight billion, nine hundred ninety-one million, three hundred eighty-three thousand, seven hundred forty-four".