6778242099 has 24 divisors (see below), whose sum is σ = 10092625920. Its totient is φ = 4381320048.

The previous prime is 6778242049. The next prime is 6778242113. The reversal of 6778242099 is 9902428776.

6778242099 is a `hidden beast` number, since 67 + 78 + 2 + 420 + 99 = 666.

It is not a de Polignac number, because 6778242099 - 2¹² = 6778238003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6778242049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29619 + ... + 120140.

It is an arithmetic number, because the mean of its divisors is an integer number (420526080).

Almost surely, 2^6778242099 is an apocalyptic number.

6778242099 is a deficient number, since it is larger than the sum of its proper divisors (3314383821).

6778242099 is a wasteful number, since it uses less digits than its factorization.

6778242099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149919 (or 149916 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 54.

The square root of 6778242099 is about 82330.0801590767. The cubic root of 6778242099 is about 1892.5136714139.

The spelling of 6778242099 in words is "six billion, seven hundred seventy-eight million, two hundred forty-two thousand, ninety-nine".