63676755767657 has 2 divisors, whose sum is σ = 63676755767658. Its totient is φ = 63676755767656.

The previous prime is 63676755767629. The next prime is 63676755767689. The reversal of 63676755767657 is 75676755767636.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63676314305536 + 441462121 = 7979744^2 + 21011^2 .

It is a cyclic number.

It is not a de Polignac number, because 63676755767657 - 2³⁰ = 63675682025833 is a prime.

It is a super-3 number, since 3×63676755767657³ (a number of 42 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (63676755767057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31838377883828 + 31838377883829.

It is an arithmetic number, because the mean of its divisors is an integer number (31838377883829).

Almost surely, 2^{63676755767657} is an apocalyptic number.

It is an amenable number.

63676755767657 is a deficient number, since it is larger than the sum of its proper divisors (1).

63676755767657 is an equidigital number, since it uses as much as digits as its factorization.

63676755767657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 49009212000, while the sum is 83.

The spelling of 63676755767657 in words is "sixty-three trillion, six hundred seventy-six billion, seven hundred fifty-five million, seven hundred sixty-seven thousand, six hundred fifty-seven".