6778131106 has 4 divisors (see below), whose sum is σ = 10167196662. Its totient is φ = 3389065552.

The previous prime is 6778131091. The next prime is 6778131127. The reversal of 6778131106 is 6011318776.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 6706135881 + 71995225 = 81891^2 + 8485^2 .

It is a super-2 number, since 2×6778131106² = 91886122580249566472, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1694532775 + ... + 1694532778.

Almost surely, 2^6778131106 is an apocalyptic number.

6778131106 is a deficient number, since it is larger than the sum of its proper divisors (3389065556).

6778131106 is a wasteful number, since it uses less digits than its factorization.

6778131106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3389065555.

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 6778131106 is about 82329.4060831244. The cubic root of 6778131106 is about 1892.5033414536.

The spelling of 6778131106 in words is "six billion, seven hundred seventy-eight million, one hundred thirty-one thousand, one hundred six".