778109670339 has 12 divisors (see below), whose sum is σ = 1042883104536. Its totient is φ = 516051935232.

The previous prime is 778109670337. The next prime is 778109670341. The reversal of 778109670339 is 933076901877.

It is an interprime number because it is at equal distance from previous prime (778109670337) and next prime (778109670341).

It is not a de Polignac number, because 778109670339 - 2¹ = 778109670337 is a prime.

It is a super-3 number, since 3×778109670339³ (a number of 37 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (778109670337) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3369822 + ... + 3593315.

It is an arithmetic number, because the mean of its divisors is an integer number (86906925378).

Almost surely, 2^778109670339 is an apocalyptic number.

778109670339 is a deficient number, since it is larger than the sum of its proper divisors (264773434197).

778109670339 is an equidigital number, since it uses as much as digits as its factorization.

778109670339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6963526 (or 6963333 counting only the distinct ones).

The product of its (nonzero) digits is 12002256, while the sum is 60.

The spelling of 778109670339 in words is "seven hundred seventy-eight billion, one hundred nine million, six hundred seventy thousand, three hundred thirty-nine".