77520536563 has 2 divisors, whose sum is σ = 77520536564. Its totient is φ = 77520536562.

The previous prime is 77520536557. The next prime is 77520536573. The reversal of 77520536563 is 36563502577.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77520536563 is a prime.

It is not a weakly prime, because it can be changed into another prime (77520536543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38760268281 + 38760268282.

It is an arithmetic number, because the mean of its divisors is an integer number (38760268282).

Almost surely, 2^77520536563 is an apocalyptic number.

77520536563 is a deficient number, since it is larger than the sum of its proper divisors (1).

77520536563 is an equidigital number, since it uses as much as digits as its factorization.

77520536563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3969000, while the sum is 49.

The spelling of 77520536563 in words is "seventy-seven billion, five hundred twenty million, five hundred thirty-six thousand, five hundred sixty-three".