8161524648 has 48 divisors (see below), whose sum is σ = 22117485780. Its totient is φ = 2718864384.

The previous prime is 8161524647. The next prime is 8161524691. The reversal of 8161524648 is 8464251618.

It is a happy number.

8161524648 is a `hidden beast` number, since 8 + 1 + 61 + 524 + 64 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 7995578724 + 165945924 = 89418^2 + 12882^2 .

It is a super-2 number, since 2×8161524648² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8161524647) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88786 + ... + 155582.

Almost surely, 2^8161524648 is an apocalyptic number.

It is an amenable number.

8161524648 is an abundant number, since it is smaller than the sum of its proper divisors (13955961132).

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

8161524648 is a wasteful number, since it uses less digits than its factorization.

8161524648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68506 (or 68499 counting only the distinct ones).

The product of its digits is 368640, while the sum is 45.

The square root of 8161524648 is about 90341.1569994540. The cubic root of 8161524648 is about 2013.3707989997.

The spelling of 8161524648 in words is "eight billion, one hundred sixty-one million, five hundred twenty-four thousand, six hundred forty-eight".