6783945218894 has 8 divisors (see below), whose sum is σ = 10179504695448. Its totient is φ = 3390776987080.

The previous prime is 6783945218867. The next prime is 6783945218899. The reversal of 6783945218894 is 4988125493876.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6783945218899) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 597804092 + ... + 597815439.

It is an arithmetic number, because the mean of its divisors is an integer number (1272438086931).

Almost surely, 2^{6783945218894} is an apocalyptic number.

6783945218894 is a deficient number, since it is larger than the sum of its proper divisors (3395559476554).

6783945218894 is a wasteful number, since it uses less digits than its factorization.

6783945218894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1195622370.

The product of its digits is 836075520, while the sum is 74.

The spelling of 6783945218894 in words is "six trillion, seven hundred eighty-three billion, nine hundred forty-five million, two hundred eighteen thousand, eight hundred ninety-four".