7116776721 has 24 divisors (see below), whose sum is σ = 10691370144. Its totient is φ = 4730788800.

The previous prime is 7116776677. The next prime is 7116776747. The reversal of 7116776721 is 1276776117.

It is not a de Polignac number, because 7116776721 - 2¹⁹ = 7116252433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7116776921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42121 + ... + 126521.

It is an arithmetic number, because the mean of its divisors is an integer number (445473756).

Almost surely, 2^7116776721 is an apocalyptic number.

It is an amenable number.

7116776721 is a deficient number, since it is larger than the sum of its proper divisors (3574593423).

7116776721 is an equidigital number, since it uses as much as digits as its factorization.

7116776721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84763 (or 84751 counting only the distinct ones).

The product of its digits is 172872, while the sum is 45.

The square root of 7116776721 is about 84360.9905169445. The cubic root of 7116776721 is about 1923.5099929710.

The spelling of 7116776721 in words is "seven billion, one hundred sixteen million, seven hundred seventy-six thousand, seven hundred twenty-one".