9723509766077 has 2 divisors, whose sum is σ = 9723509766078. Its totient is φ = 9723509766076.

The previous prime is 9723509766073. The next prime is 9723509766097. The reversal of 9723509766077 is 7706679053279.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7181226207961 + 2542283558116 = 2679781^2 + 1594454^2 .

It is a cyclic number.

It is not a de Polignac number, because 9723509766077 - 2² = 9723509766073 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9723509765998 and 9723509766016.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9723509766073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4861754883038 + 4861754883039.

It is an arithmetic number, because the mean of its divisors is an integer number (4861754883039).

Almost surely, 2^{9723509766077} is an apocalyptic number.

It is an amenable number.

9723509766077 is a deficient number, since it is larger than the sum of its proper divisors (1).

9723509766077 is an equidigital number, since it uses as much as digits as its factorization.

9723509766077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 210039480, while the sum is 68.

The spelling of 9723509766077 in words is "nine trillion, seven hundred twenty-three billion, five hundred nine million, seven hundred sixty-six thousand, seventy-seven".