7681436768 has 48 divisors (see below), whose sum is σ = 15337838880. Its totient is φ = 3786448896.

The previous prime is 7681436761. The next prime is 7681436779. The reversal of 7681436768 is 8676341867.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7681436761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 749696 + ... + 759872.

It is an arithmetic number, because the mean of its divisors is an integer number (319538310).

Almost surely, 2^7681436768 is an apocalyptic number.

It is an amenable number.

7681436768 is a deficient number, since it is larger than the sum of its proper divisors (7656402112).

7681436768 is a wasteful number, since it uses less digits than its factorization.

7681436768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10519 (or 10511 counting only the distinct ones).

The product of its digits is 8128512, while the sum is 56.

The square root of 7681436768 is about 87643.8062158416. The cubic root of 7681436768 is about 1973.0926856327.

The spelling of 7681436768 in words is "seven billion, six hundred eighty-one million, four hundred thirty-six thousand, seven hundred sixty-eight".