7916788647 has 12 divisors (see below), whose sum is σ = 11436159280. Its totient is φ = 5277490848.

The previous prime is 7916788637. The next prime is 7916788661. The reversal of 7916788647 is 7468876197.

It is not a de Polignac number, because 7916788647 - 2⁷ = 7916788519 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 (7916788637) 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, 185979 + ... + 224547.

Almost surely, 2^7916788647 is an apocalyptic number.

7916788647 is a deficient number, since it is larger than the sum of its proper divisors (3519370633).

7916788647 is a wasteful number, since it uses less digits than its factorization.

7916788647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61382 (or 61379 counting only the distinct ones).

The product of its digits is 28449792, while the sum is 63.

The square root of 7916788647 is about 88976.3375679175. The cubic root of 7916788647 is about 1993.0415385681.

The spelling of 7916788647 in words is "seven billion, nine hundred sixteen million, seven hundred eighty-eight thousand, six hundred forty-seven".