6778772419 has 4 divisors (see below), whose sum is σ = 6785348400. Its totient is φ = 6772196440.

The previous prime is 6778772411. The next prime is 6778772461. The reversal of 6778772419 is 9142778776.

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 6778772419 - 2³ = 6778772411 is a prime.

It is a super-2 number, since 2×6778772419² = 91903511017190223122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6778772411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3286444 + ... + 3288505.

It is an arithmetic number, because the mean of its divisors is an integer number (1696337100).

Almost surely, 2^6778772419 is an apocalyptic number.

6778772419 is a deficient number, since it is larger than the sum of its proper divisors (6575981).

6778772419 is a wasteful number, since it uses less digits than its factorization.

6778772419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6575980.

The product of its digits is 8297856, while the sum is 58.

The square root of 6778772419 is about 82333.3007901420. The cubic root of 6778772419 is about 1892.5630259841.

The spelling of 6778772419 in words is "six billion, seven hundred seventy-eight million, seven hundred seventy-two thousand, four hundred nineteen".