780400916713 has 6 divisors (see below), whose sum is σ = 857796049082. Its totient is φ = 709455378720.

The previous prime is 780400916663. The next prime is 780400916717. The reversal of 780400916713 is 317619004087.

It can be written as a sum of positive squares in only one way, i.e., 734522703849 + 45878212864 = 857043^2 + 214192^2 .

It is not a de Polignac number, because 780400916713 - 2¹⁷ = 780400785641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (780400916717) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3224797056 + ... + 3224797297.

Almost surely, 2^780400916713 is an apocalyptic number.

It is an amenable number.

780400916713 is a deficient number, since it is larger than the sum of its proper divisors (77395132369).

780400916713 is a wasteful number, since it uses less digits than its factorization.

780400916713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6449594375 (or 6449594364 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 46.

The spelling of 780400916713 in words is "seven hundred eighty billion, four hundred million, nine hundred sixteen thousand, seven hundred thirteen".