6779821101 has 4 divisors (see below), whose sum is σ = 9039761472. Its totient is φ = 4519880732.

The previous prime is 6779821099. The next prime is 6779821163. The reversal of 6779821101 is 1011289776.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6779821101 - 2¹ = 6779821099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6779821171) 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, 1129970181 + ... + 1129970186.

It is an arithmetic number, because the mean of its divisors is an integer number (2259940368).

Almost surely, 2^6779821101 is an apocalyptic number.

It is an amenable number.

6779821101 is a deficient number, since it is larger than the sum of its proper divisors (2259940371).

6779821101 is a wasteful number, since it uses less digits than its factorization.

6779821101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2259940370.

The product of its (nonzero) digits is 42336, while the sum is 42.

The square root of 6779821101 is about 82339.6690605446. The cubic root of 6779821101 is about 1892.6606146684.

The spelling of 6779821101 in words is "six billion, seven hundred seventy-nine million, eight hundred twenty-one thousand, one hundred one".