7716865081 has 4 divisors (see below), whose sum is σ = 7741678464. Its totient is φ = 7692051700.

The previous prime is 7716865069. The next prime is 7716865103. The reversal of 7716865081 is 1805686177.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 7716865081 - 2¹⁵ = 7716832313 is a prime.

It is a super-2 number, since 2×7716865081² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7716865021) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 12406225 + ... + 12406846.

It is an arithmetic number, because the mean of its divisors is an integer number (1935419616).

Almost surely, 2^7716865081 is an apocalyptic number.

It is an amenable number.

7716865081 is a deficient number, since it is larger than the sum of its proper divisors (24813383).

7716865081 is a wasteful number, since it uses less digits than its factorization.

7716865081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24813382.

The product of its (nonzero) digits is 564480, while the sum is 49.

The square root of 7716865081 is about 87845.6890291151. The cubic root of 7716865081 is about 1976.1214658166.

The spelling of 7716865081 in words is "seven billion, seven hundred sixteen million, eight hundred sixty-five thousand, eighty-one".