7982159761 has 2 divisors, whose sum is σ = 7982159762. Its totient is φ = 7982159760.

The previous prime is 7982159741. The next prime is 7982159767. The reversal of 7982159761 is 1679512897.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7800422400 + 181737361 = 88320^2 + 13481^2 .

It is a cyclic number.

It is not a de Polignac number, because 7982159761 - 2²¹ = 7980062609 is a prime.

It is not a weakly prime, because it can be changed into another prime (7982159767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3991079880 + 3991079881.

It is an arithmetic number, because the mean of its divisors is an integer number (3991079881).

Almost surely, 2^7982159761 is an apocalyptic number.

It is an amenable number.

7982159761 is a deficient number, since it is larger than the sum of its proper divisors (1).

7982159761 is an equidigital number, since it uses as much as digits as its factorization.

7982159761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1905120, while the sum is 55.

The square root of 7982159761 is about 89342.9334698610. The cubic root of 7982159761 is about 1998.5122069270.

The spelling of 7982159761 in words is "seven billion, nine hundred eighty-two million, one hundred fifty-nine thousand, seven hundred sixty-one".