6823137644 has 12 divisors (see below), whose sum is σ = 11942170968. Its totient is φ = 3411088800.

The previous prime is 6823137623. The next prime is 6823137689. The reversal of 6823137644 is 4467313286.

It is a junction number, because it is equal to n+sod(n) for n = 6823137595 and 6823137604.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87017 + ... + 145664.

It is an arithmetic number, because the mean of its divisors is an integer number (995180914).

Almost surely, 2^6823137644 is an apocalyptic number.

It is an amenable number.

6823137644 is a deficient number, since it is larger than the sum of its proper divisors (5119033324).

6823137644 is a wasteful number, since it uses less digits than its factorization.

6823137644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240016 (or 240014 counting only the distinct ones).

The product of its digits is 580608, while the sum is 44.

The square root of 6823137644 is about 82602.2859489978. The cubic root of 6823137644 is about 1896.6828217519.

The spelling of 6823137644 in words is "six billion, eight hundred twenty-three million, one hundred thirty-seven thousand, six hundred forty-four".