6919893578834 has 4 divisors (see below), whose sum is σ = 10379840368254. Its totient is φ = 3459946789416.

The previous prime is 6919893578813. The next prime is 6919893578867. The reversal of 6919893578834 is 4388753989196.

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., 6435846388609 + 484047190225 = 2536897^2 + 695735^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1729973394707 + ... + 1729973394710.

Almost surely, 2^{6919893578834} is an apocalyptic number.

6919893578834 is a deficient number, since it is larger than the sum of its proper divisors (3459946789420).

6919893578834 is a wasteful number, since it uses less digits than its factorization.

6919893578834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3459946789419.

The product of its digits is 2821754880, while the sum is 80.

The spelling of 6919893578834 in words is "six trillion, nine hundred nineteen billion, eight hundred ninety-three million, five hundred seventy-eight thousand, eight hundred thirty-four".