6778912142 has 16 divisors (see below), whose sum is σ = 10272787200. Its totient is φ = 3354674400.

The previous prime is 6778912141. The next prime is 6778912181. The reversal of 6778912142 is 2412198776.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6778912141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 836084 + ... + 844152.

It is an arithmetic number, because the mean of its divisors is an integer number (642049200).

Almost surely, 2^6778912142 is an apocalyptic number.

6778912142 is a deficient number, since it is larger than the sum of its proper divisors (3493875058).

6778912142 is a wasteful number, since it uses less digits than its factorization.

6778912142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12331.

The product of its digits is 338688, while the sum is 47.

The square root of 6778912142 is about 82334.1493063480. The cubic root of 6778912142 is about 1892.5760289661.

The spelling of 6778912142 in words is "six billion, seven hundred seventy-eight million, nine hundred twelve thousand, one hundred forty-two".