7681443791 has 12 divisors (see below), whose sum is σ = 9324060912. Its totient is φ = 6297828768.

The previous prime is 7681443751. The next prime is 7681443901. The reversal of 7681443791 is 1973441867.

It is not a de Polignac number, because 7681443791 - 2¹⁰ = 7681442767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7681443751) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3406790 + ... + 3409043.

It is an arithmetic number, because the mean of its divisors is an integer number (777005076).

Almost surely, 2^7681443791 is an apocalyptic number.

7681443791 is a deficient number, since it is larger than the sum of its proper divisors (1642617121).

7681443791 is a wasteful number, since it uses less digits than its factorization.

7681443791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6815870 (or 6815863 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 50.

The square root of 7681443791 is about 87643.8462814133. The cubic root of 7681443791 is about 1973.0932869536.

The spelling of 7681443791 in words is "seven billion, six hundred eighty-one million, four hundred forty-three thousand, seven hundred ninety-one".