9690771037777 has 2 divisors, whose sum is σ = 9690771037778. Its totient is φ = 9690771037776.

The previous prime is 9690771037763. The next prime is 9690771037813. The reversal of 9690771037777 is 7777301770969.

9690771037777 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5687266270401 + 4003504767376 = 2384799^2 + 2000876^2 .

It is a cyclic number.

It is not a de Polignac number, because 9690771037777 - 2²⁷ = 9690636820049 is a prime.

It is a super-2 number, since 2×9690771037777² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9690771032777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4845385518888 + 4845385518889.

It is an arithmetic number, because the mean of its divisors is an integer number (4845385518889).

Almost surely, 2^{9690771037777} is an apocalyptic number.

It is an amenable number.

9690771037777 is a deficient number, since it is larger than the sum of its proper divisors (1).

9690771037777 is an equidigital number, since it uses as much as digits as its factorization.

9690771037777 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 171532242, while the sum is 70.

The spelling of 9690771037777 in words is "nine trillion, six hundred ninety billion, seven hundred seventy-one million, thirty-seven thousand, seven hundred seventy-seven".