763868666333 has 4 divisors (see below), whose sum is σ = 776391103548. Its totient is φ = 751346229120.

The previous prime is 763868666329. The next prime is 763868666369. The reversal of 763868666333 is 333666868367.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 49443080164 + 714425586169 = 222358^2 + 845237^2 .

It is a cyclic number.

It is not a de Polignac number, because 763868666333 - 2² = 763868666329 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 763868666333.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (763868660333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6261218516 + ... + 6261218637.

It is an arithmetic number, because the mean of its divisors is an integer number (194097775887).

Almost surely, 2^763868666333 is an apocalyptic number.

It is an amenable number.

763868666333 is a deficient number, since it is larger than the sum of its proper divisors (12522437215).

763868666333 is a wasteful number, since it uses less digits than its factorization.

763868666333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12522437214.

The product of its digits is 282175488, while the sum is 65.

The spelling of 763868666333 in words is "seven hundred sixty-three billion, eight hundred sixty-eight million, six hundred sixty-six thousand, three hundred thirty-three".