780659406813 has 16 divisors (see below), whose sum is σ = 1222851099456. Its totient is φ = 436732535040.

The previous prime is 780659406749. The next prime is 780659406833. The reversal of 780659406813 is 318604956087.

It is not a de Polignac number, because 780659406813 - 2⁶ = 780659406749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (780659406833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 909859020 + ... + 909859877.

It is an arithmetic number, because the mean of its divisors is an integer number (76428193716).

Almost surely, 2^780659406813 is an apocalyptic number.

It is an amenable number.

780659406813 is a deficient number, since it is larger than the sum of its proper divisors (442191692643).

780659406813 is a wasteful number, since it uses less digits than its factorization.

780659406813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1819718924.

The product of its (nonzero) digits is 8709120, while the sum is 57.

The spelling of 780659406813 in words is "seven hundred eighty billion, six hundred fifty-nine million, four hundred six thousand, eight hundred thirteen".