7789773962879 has 4 divisors (see below), whose sum is σ = 8128459787376. Its totient is φ = 7451088138384.

The previous prime is 7789773962869. The next prime is 7789773962959. The reversal of 7789773962879 is 9782693779877.

It is a happy number.

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 7789773962879 - 2⁴ = 7789773962863 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7789773962794 and 7789773962803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7789773962849) 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, 169342912214 + ... + 169342912259.

It is an arithmetic number, because the mean of its divisors is an integer number (2032114946844).

Almost surely, 2^{7789773962879} is an apocalyptic number.

7789773962879 is a deficient number, since it is larger than the sum of its proper divisors (338685824497).

7789773962879 is a wasteful number, since it uses less digits than its factorization.

7789773962879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338685824496.

The product of its digits is 28229306112, while the sum is 89.

The spelling of 7789773962879 in words is "seven trillion, seven hundred eighty-nine billion, seven hundred seventy-three million, nine hundred sixty-two thousand, eight hundred seventy-nine".