7697064251689 has 2 divisors, whose sum is σ = 7697064251690. Its totient is φ = 7697064251688.

The previous prime is 7697064251663. The next prime is 7697064251759. The reversal of 7697064251689 is 9861524607967.

It is a happy number.

It is an a-pointer prime, because the next prime (7697064251759) can be obtained adding 7697064251689 to its sum of digits (70).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6618872762089 + 1078191489600 = 2572717^2 + 1038360^2 .

It is an emirp because it is prime and its reverse (9861524607967) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7697064251689 is a prime.

It is not a weakly prime, because it can be changed into another prime (7697064251659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3848532125844 + 3848532125845.

It is an arithmetic number, because the mean of its divisors is an integer number (3848532125845).

Almost surely, 2^{7697064251689} is an apocalyptic number.

It is an amenable number.

7697064251689 is a deficient number, since it is larger than the sum of its proper divisors (1).

7697064251689 is an equidigital number, since it uses as much as digits as its factorization.

7697064251689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 274337280, while the sum is 70.

The spelling of 7697064251689 in words is "seven trillion, six hundred ninety-seven billion, sixty-four million, two hundred fifty-one thousand, six hundred eighty-nine".