6415816136 has 16 divisors (see below), whose sum is σ = 12038071500. Its totient is φ = 3205663744.

The previous prime is 6415816129. The next prime is 6415816139. The reversal of 6415816136 is 6316185146.

It can be written as a sum of positive squares in 2 ways, for example, as 5040148036 + 1375668100 = 70994^2 + 37090^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6415816093 and 6415816102.

It is not an unprimeable number, because it can be changed into a prime (6415816139) 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, 268361 + ... + 291288.

Almost surely, 2^6415816136 is an apocalyptic number.

It is an amenable number.

6415816136 is a deficient number, since it is larger than the sum of its proper divisors (5622255364).

6415816136 is a wasteful number, since it uses less digits than its factorization.

6415816136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561088 (or 561084 counting only the distinct ones).

The product of its digits is 103680, while the sum is 41.

The square root of 6415816136 is about 80098.7898535302. The cubic root of 6415816136 is about 1858.1636919760.

The spelling of 6415816136 in words is "six billion, four hundred fifteen million, eight hundred sixteen thousand, one hundred thirty-six".