8161038336 has 208 divisors, whose sum is σ = 23943931200. Its totient is φ = 2451701760.

The previous prime is 8161038287. The next prime is 8161038359. The reversal of 8161038336 is 6338301618.

It is a junction number, because it is equal to n+sod(n) for n = 8161038294 and 8161038303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23383890 + ... + 23384238.

Almost surely, 2^8161038336 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8161038336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11971965600).

8161038336 is an abundant number, since it is smaller than the sum of its proper divisors (15782892864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8161038336 is a wasteful number, since it uses less digits than its factorization.

8161038336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560 (or 538 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 8161038336 is about 90338.4654286312. The cubic root of 8161038336 is about 2013.3308086846.

The spelling of 8161038336 in words is "eight billion, one hundred sixty-one million, thirty-eight thousand, three hundred thirty-six".