6783945218895 has 64 divisors (see below), whose sum is σ = 12076649238528. Its totient is φ = 3229289856000.

The previous prime is 6783945218867. The next prime is 6783945218899. The reversal of 6783945218895 is 5988125493876.

It is not a de Polignac number, because 6783945218895 - 2²¹ = 6783943121743 is a prime.

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 63 ways as a sum of consecutive naturals, for example, 6599515 + ... + 7557875.

It is an arithmetic number, because the mean of its divisors is an integer number (188697644352).

Almost surely, 2^{6783945218895} is an apocalyptic number.

6783945218895 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

6783945218895 is a deficient number, since it is larger than the sum of its proper divisors (5292704019633).

6783945218895 is a wasteful number, since it uses less digits than its factorization.

6783945218895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 959584.

The product of its digits is 1045094400, while the sum is 75.

The spelling of 6783945218895 in words is "six trillion, seven hundred eighty-three billion, nine hundred forty-five million, two hundred eighteen thousand, eight hundred ninety-five".