780946764068 has 6 divisors (see below), whose sum is σ = 1366656837126. Its totient is φ = 390473382032.

The previous prime is 780946764049. The next prime is 780946764071. The reversal of 780946764068 is 860467649087.

It can be written as a sum of positive squares in only one way, i.e., 653863069924 + 127083694144 = 808618^2 + 356488^2 .

It is a junction number, because it is equal to n+sod(n) for n = 780946763995 and 780946764013.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97618345505 + ... + 97618345512.

It is an arithmetic number, because the mean of its divisors is an integer number (227776139521).

Almost surely, 2^780946764068 is an apocalyptic number.

It is an amenable number.

780946764068 is a deficient number, since it is larger than the sum of its proper divisors (585710073058).

780946764068 is a wasteful number, since it uses less digits than its factorization.

780946764068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195236691021 (or 195236691019 counting only the distinct ones).

The product of its (nonzero) digits is 97542144, while the sum is 65.

The spelling of 780946764068 in words is "seven hundred eighty billion, nine hundred forty-six million, seven hundred sixty-four thousand, sixty-eight".