768690562553 has 2 divisors, whose sum is σ = 768690562554. Its totient is φ = 768690562552.

The previous prime is 768690562481. The next prime is 768690562571. The reversal of 768690562553 is 355265096867.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 402778083904 + 365912478649 = 634648^2 + 604907^2 .

It is a cyclic number.

It is not a de Polignac number, because 768690562553 - 2¹⁶ = 768690497017 is a prime.

It is not a weakly prime, because it can be changed into another prime (768690532553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 384345281276 + 384345281277.

It is an arithmetic number, because the mean of its divisors is an integer number (384345281277).

Almost surely, 2^768690562553 is an apocalyptic number.

It is an amenable number.

768690562553 is a deficient number, since it is larger than the sum of its proper divisors (1).

768690562553 is an equidigital number, since it uses as much as digits as its factorization.

768690562553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648000, while the sum is 62.

The spelling of 768690562553 in words is "seven hundred sixty-eight billion, six hundred ninety million, five hundred sixty-two thousand, five hundred fifty-three".