780839938086 has 16 divisors (see below), whose sum is σ = 1681809097584. Its totient is φ = 240258442464.

The previous prime is 780839938057. The next prime is 780839938111. The reversal of 780839938086 is 680839938087.

It is a super-2 number, since 2×780839938086² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 780839938086.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5005384141 + ... + 5005384296.

It is an arithmetic number, because the mean of its divisors is an integer number (105113068599).

Almost surely, 2^780839938086 is an apocalyptic number.

780839938086 is an abundant number, since it is smaller than the sum of its proper divisors (900969159498).

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

780839938086 is a wasteful number, since it uses less digits than its factorization.

780839938086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10010768455.

The product of its (nonzero) digits is 125411328, while the sum is 69.

Subtracting from 780839938086 its reverse (680839938087), we obtain a palindrome (99999999999).

The spelling of 780839938086 in words is "seven hundred eighty billion, eight hundred thirty-nine million, nine hundred thirty-eight thousand, eighty-six".