6436911844 has 12 divisors (see below), whose sum is σ = 12288649968. Its totient is φ = 2925869000.

The previous prime is 6436911839. The next prime is 6436911853. The reversal of 6436911844 is 4481196346.

It is a junction number, because it is equal to n+sod(n) for n = 6436911794 and 6436911803.

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, 73146682 + ... + 73146769.

It is an arithmetic number, because the mean of its divisors is an integer number (1024054164).

Almost surely, 2^6436911844 is an apocalyptic number.

It is an amenable number.

6436911844 is a deficient number, since it is larger than the sum of its proper divisors (5851738124).

6436911844 is a wasteful number, since it uses less digits than its factorization.

6436911844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146293466 (or 146293464 counting only the distinct ones).

The product of its digits is 497664, while the sum is 46.

The square root of 6436911844 is about 80230.3673430454. The cubic root of 6436911844 is about 1860.1980599974.

The spelling of 6436911844 in words is "six billion, four hundred thirty-six million, nine hundred eleven thousand, eight hundred forty-four".