16765777097 has 2 divisors, whose sum is σ = 16765777098. Its totient is φ = 16765777096.

The previous prime is 16765777087. The next prime is 16765777139. The reversal of 16765777097 is 79077756761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8787000121 + 7978776976 = 93739^2 + 89324^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16765777097 is a prime.

It is not a weakly prime, because it can be changed into another prime (16765777037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8382888548 + 8382888549.

It is an arithmetic number, because the mean of its divisors is an integer number (8382888549).

Almost surely, 2^16765777097 is an apocalyptic number.

It is an amenable number.

16765777097 is a deficient number, since it is larger than the sum of its proper divisors (1).

16765777097 is an equidigital number, since it uses as much as digits as its factorization.

16765777097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27227340, while the sum is 62.

The spelling of 16765777097 in words is "sixteen billion, seven hundred sixty-five million, seven hundred seventy-seven thousand, ninety-seven".