768868779253 has 2 divisors, whose sum is σ = 768868779254. Its totient is φ = 768868779252.

The previous prime is 768868779251. The next prime is 768868779373. The reversal of 768868779253 is 352977868867.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 555238090449 + 213630688804 = 745143^2 + 462202^2 .

It is a cyclic number.

It is not a de Polignac number, because 768868779253 - 2¹ = 768868779251 is a prime.

Together with 768868779251, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 768868779253.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (768868779251) 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, 384434389626 + 384434389627.

It is an arithmetic number, because the mean of its divisors is an integer number (384434389627).

Almost surely, 2^768868779253 is an apocalyptic number.

It is an amenable number.

768868779253 is a deficient number, since it is larger than the sum of its proper divisors (1).

768868779253 is an equidigital number, since it uses as much as digits as its factorization.

768868779253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1706987520, while the sum is 76.

The spelling of 768868779253 in words is "seven hundred sixty-eight billion, eight hundred sixty-eight million, seven hundred seventy-nine thousand, two hundred fifty-three".