7641375689 has 2 divisors, whose sum is σ = 7641375690. Its totient is φ = 7641375688.

The previous prime is 7641375653. The next prime is 7641375719. The reversal of 7641375689 is 9865731467.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7530768400 + 110607289 = 86780^2 + 10517^2 .

It is a cyclic number.

It is not a de Polignac number, because 7641375689 - 2¹² = 7641371593 is a prime.

It is not a weakly prime, because it can be changed into another prime (7641375649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3820687844 + 3820687845.

It is an arithmetic number, because the mean of its divisors is an integer number (3820687845).

Almost surely, 2^7641375689 is an apocalyptic number.

It is an amenable number.

7641375689 is a deficient number, since it is larger than the sum of its proper divisors (1).

7641375689 is an equidigital number, since it uses as much as digits as its factorization.

7641375689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7620480, while the sum is 56.

The square root of 7641375689 is about 87414.9626151038. The cubic root of 7641375689 is about 1969.6566081876.

The spelling of 7641375689 in words is "seven billion, six hundred forty-one million, three hundred seventy-five thousand, six hundred eighty-nine".