780712269668 has 6 divisors (see below), whose sum is σ = 1366246471926. Its totient is φ = 390356134832.

The previous prime is 780712269643. The next prime is 780712269679. The reversal of 780712269668 is 866962217087.

It can be written as a sum of positive squares in only one way, i.e., 563088153664 + 217624116004 = 750392^2 + 466502^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 780712269668.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97589033705 + ... + 97589033712.

It is an arithmetic number, because the mean of its divisors is an integer number (227707745321).

Almost surely, 2^780712269668 is an apocalyptic number.

It is an amenable number.

780712269668 is a deficient number, since it is larger than the sum of its proper divisors (585534202258).

780712269668 is a wasteful number, since it uses less digits than its factorization.

780712269668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195178067421 (or 195178067419 counting only the distinct ones).

The product of its (nonzero) digits is 24385536, while the sum is 62.

The spelling of 780712269668 in words is "seven hundred eighty billion, seven hundred twelve million, two hundred sixty-nine thousand, six hundred sixty-eight".