768434572816 has 45 divisors (see below), whose sum is σ = 1530426884301. Its totient is φ = 373769919936.

The previous prime is 768434572813. The next prime is 768434572817. The reversal of 768434572816 is 618275434867.

The square root of 768434572816 is 876604.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 687605808400 + 80828764416 = 829220^2 + 284304^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (768434572813) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 129734431 + ... + 129740353.

Almost surely, 2^768434572816 is an apocalyptic number.

768434572816 is the 876604-th square number.

It is an amenable number.

768434572816 is a deficient number, since it is larger than the sum of its proper divisors (761992311485).

768434572816 is an frugal number, since it uses more digits than its factorization.

768434572816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11928 (or 5962 counting only the distinct ones).

The product of its digits is 54190080, while the sum is 61.

The spelling of 768434572816 in words is "seven hundred sixty-eight billion, four hundred thirty-four million, five hundred seventy-two thousand, eight hundred sixteen".