7779017834679 has 16 divisors (see below), whose sum is σ = 12765567729152. Its totient is φ = 4103218198368.

The previous prime is 7779017834639. The next prime is 7779017834689. The reversal of 7779017834679 is 9764387109777.

It is not a de Polignac number, because 7779017834679 - 2¹² = 7779017830583 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7779017834679.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7779017834639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14247285139 + ... + 14247285684.

It is an arithmetic number, because the mean of its divisors is an integer number (797847983072).

Almost surely, 2^{7779017834679} is an apocalyptic number.

7779017834679 is a deficient number, since it is larger than the sum of its proper divisors (4986549894473).

7779017834679 is a wasteful number, since it uses less digits than its factorization.

7779017834679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28494570846.

The product of its (nonzero) digits is 784147392, while the sum is 75.

The spelling of 7779017834679 in words is "seven trillion, seven hundred seventy-nine billion, seventeen million, eight hundred thirty-four thousand, six hundred seventy-nine".