8161082496 has 144 divisors (see below), whose sum is σ = 27318735990. Its totient is φ = 2331721728.

The previous prime is 8161082459. The next prime is 8161082519. The reversal of 8161082496 is 6942801618.

8161082496 is a `hidden beast` number, since 8 + 1 + 610 + 8 + 24 + 9 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 7720082496 + 441000000 = 87864^2 + 21000^2 .

It is a tau number, because it is divible by the number of its divisors (144).

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 15841 + ... + 128736.

Almost surely, 2^8161082496 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 8161082496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13659367995).

8161082496 is an abundant number, since it is smaller than the sum of its proper divisors (19157653494).

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

8161082496 is a wasteful number, since it uses less digits than its factorization.

8161082496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144611 (or 144589 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 8161082496 is about 90338.7098424590. The cubic root of 8161082496 is about 2013.3344401068.

The spelling of 8161082496 in words is "eight billion, one hundred sixty-one million, eighty-two thousand, four hundred ninety-six".