7716041281 has 27 divisors (see below), whose sum is σ = 8690584539. Its totient is φ = 6847381632.

The previous prime is 7716041279. The next prime is 7716041297. The reversal of 7716041281 is 1821406177.

The square root of 7716041281 is 87841.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 13 ways, for example, as 7637186881 + 78854400 = 87391^2 + 8880^2 .

It is not a de Polignac number, because 7716041281 - 2¹ = 7716041279 is a prime.

It is a super-2 number, since 2×7716041281² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7716041281.

It is not an unprimeable number, because it can be changed into a prime (7716041231) 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 26 ways as a sum of consecutive naturals, for example, 33115941 + ... + 33116173.

Almost surely, 2^7716041281 is an apocalyptic number.

7716041281 is the 87841-st square number.

7716041281 is the 43921-st centered octagonal number.

It is an amenable number.

7716041281 is a deficient number, since it is larger than the sum of its proper divisors (974543258).

7716041281 is an equidigital number, since it uses as much as digits as its factorization.

7716041281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550 (or 275 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 37.

The cubic root of 7716041281 is about 1976.0511442210.

The spelling of 7716041281 in words is "seven billion, seven hundred sixteen million, forty-one thousand, two hundred eighty-one".