6783945123 has 4 divisors (see below), whose sum is σ = 9045260168. Its totient is φ = 4522630080.

The previous prime is 6783945107. The next prime is 6783945127. The reversal of 6783945123 is 3215493876.

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

It is not a de Polignac number, because 6783945123 - 2⁴ = 6783945107 is a prime.

It is a super-2 number, since 2×6783945123² = 92043822863750970258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6783945127) 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, 1130657518 + ... + 1130657523.

It is an arithmetic number, because the mean of its divisors is an integer number (2261315042).

Almost surely, 2^6783945123 is an apocalyptic number.

6783945123 is a deficient number, since it is larger than the sum of its proper divisors (2261315045).

6783945123 is a wasteful number, since it uses less digits than its factorization.

6783945123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2261315044.

The product of its digits is 1088640, while the sum is 48.

The square root of 6783945123 is about 82364.7079943831. The cubic root of 6783945123 is about 1893.0442920455.

The spelling of 6783945123 in words is "six billion, seven hundred eighty-three million, nine hundred forty-five thousand, one hundred twenty-three".