780394316540 has 12 divisors (see below), whose sum is σ = 1638828064776. Its totient is φ = 312157726608.

The previous prime is 780394316521. The next prime is 780394316579. The reversal of 780394316540 is 45613493087.

It is a congruent number.

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, 19509857894 + ... + 19509857933.

It is an arithmetic number, because the mean of its divisors is an integer number (136569005398).

Almost surely, 2^780394316540 is an apocalyptic number.

It is an amenable number.

780394316540 is an abundant number, since it is smaller than the sum of its proper divisors (858433748236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

780394316540 is a wasteful number, since it uses less digits than its factorization.

780394316540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39019715836 (or 39019715834 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 50.

The spelling of 780394316540 in words is "seven hundred eighty billion, three hundred ninety-four million, three hundred sixteen thousand, five hundred forty".