7782286081 has 2 divisors, whose sum is σ = 7782286082. Its totient is φ = 7782286080.

The previous prime is 7782286067. The next prime is 7782286087. The reversal of 7782286081 is 1806822877.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7727289025 + 54997056 = 87905^2 + 7416^2 .

It is an emirp because it is prime and its reverse (1806822877) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7782286081 - 2⁹ = 7782285569 is a prime.

It is a super-2 number, since 2×7782286081² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7782286087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3891143040 + 3891143041.

It is an arithmetic number, because the mean of its divisors is an integer number (3891143041).

Almost surely, 2^7782286081 is an apocalyptic number.

It is an amenable number.

7782286081 is a deficient number, since it is larger than the sum of its proper divisors (1).

7782286081 is an equidigital number, since it uses as much as digits as its factorization.

7782286081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 602112, while the sum is 49.

The square root of 7782286081 is about 88217.2663428198. The cubic root of 7782286081 is about 1981.6900579681.

The spelling of 7782286081 in words is "seven billion, seven hundred eighty-two million, two hundred eighty-six thousand, eighty-one".