6445124236 has 12 divisors (see below), whose sum is σ = 11296567800. Its totient is φ = 3217533440.

The previous prime is 6445124209. The next prime is 6445124237. The reversal of 6445124236 is 6324215446.

It is a junction number, because it is equal to n+sod(n) for n = 6445124195 and 6445124204.

It is not an unprimeable number, because it can be changed into a prime (6445124237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1254286 + ... + 1259413.

It is an arithmetic number, because the mean of its divisors is an integer number (941380650).

Almost surely, 2^6445124236 is an apocalyptic number.

It is an amenable number.

6445124236 is a deficient number, since it is larger than the sum of its proper divisors (4851443564).

6445124236 is a wasteful number, since it uses less digits than its factorization.

6445124236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2514344 (or 2514342 counting only the distinct ones).

The product of its digits is 138240, while the sum is 37.

The square root of 6445124236 is about 80281.5311014931. The cubic root of 6445124236 is about 1860.9888213560.

The spelling of 6445124236 in words is "six billion, four hundred forty-five million, one hundred twenty-four thousand, two hundred thirty-six".