8123539716 has 36 divisors (see below), whose sum is σ = 20716234812. Its totient is φ = 2683881984.

The previous prime is 8123539681. The next prime is 8123539729. The reversal of 8123539716 is 6179353218.

8123539716 is a `hidden beast` number, since 81 + 23 + 539 + 7 + 16 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 580617216 + 7542922500 = 24096^2 + 86850^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 994401 + ... + 1002536.

It is an arithmetic number, because the mean of its divisors is an integer number (575450967).

Almost surely, 2^8123539716 is an apocalyptic number.

It is an amenable number.

8123539716 is an abundant number, since it is smaller than the sum of its proper divisors (12592695096).

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

8123539716 is a wasteful number, since it uses less digits than its factorization.

8123539716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1997060 (or 1997055 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 8123539716 is about 90130.6813243970. The cubic root of 8123539716 is about 2010.2424330734.

The spelling of 8123539716 in words is "eight billion, one hundred twenty-three million, five hundred thirty-nine thousand, seven hundred sixteen".