6977819779 has 16 divisors (see below), whose sum is σ = 8486208000. Its totient is φ = 5600859264.

The previous prime is 6977819759. The next prime is 6977819789. The reversal of 6977819779 is 9779187796.

It is not a de Polignac number, because 6977819779 - 2¹⁹ = 6977295491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6977819759) 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 15 ways as a sum of consecutive naturals, for example, 123649 + ... + 171010.

It is an arithmetic number, because the mean of its divisors is an integer number (530388000).

Almost surely, 2^6977819779 is an apocalyptic number.

6977819779 is a deficient number, since it is larger than the sum of its proper divisors (1508388221).

6977819779 is a wasteful number, since it uses less digits than its factorization.

6977819779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294882.

The product of its digits is 84015792, while the sum is 70.

The square root of 6977819779 is about 83533.3453119172. The cubic root of 6977819779 is about 1910.9086051892.

The spelling of 6977819779 in words is "six billion, nine hundred seventy-seven million, eight hundred nineteen thousand, seven hundred seventy-nine".