780212308346 has 8 divisors (see below), whose sum is σ = 1170323654580. Its totient is φ = 390104423488.

The previous prime is 780212308327. The next prime is 780212308363. The reversal of 780212308346 is 643803212087.

It can be written as a sum of positive squares in 2 ways, for example, as 751794777721 + 28417530625 = 867061^2 + 168575^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 780212308297 and 780212308306.

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 in 3 ways as a sum of consecutive naturals, for example, 199301 + ... + 1264968.

Almost surely, 2^780212308346 is an apocalyptic number.

780212308346 is a deficient number, since it is larger than the sum of its proper divisors (390111346234).

780212308346 is a wasteful number, since it uses less digits than its factorization.

780212308346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1730688.

The product of its (nonzero) digits is 387072, while the sum is 44.

The spelling of 780212308346 in words is "seven hundred eighty billion, two hundred twelve million, three hundred eight thousand, three hundred forty-six".