780564568943 has 4 divisors (see below), whose sum is σ = 826480131840. Its totient is φ = 734649006048.

The previous prime is 780564568939. The next prime is 780564568957. The reversal of 780564568943 is 349865465087.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 780564568943 - 2² = 780564568939 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 780564568943.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (780564568543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22957781423 + ... + 22957781456.

It is an arithmetic number, because the mean of its divisors is an integer number (206620032960).

Almost surely, 2^780564568943 is an apocalyptic number.

780564568943 is a deficient number, since it is larger than the sum of its proper divisors (45915562897).

780564568943 is a wasteful number, since it uses less digits than its factorization.

780564568943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45915562896.

The product of its (nonzero) digits is 174182400, while the sum is 65.

The spelling of 780564568943 in words is "seven hundred eighty billion, five hundred sixty-four million, five hundred sixty-eight thousand, nine hundred forty-three".