8539206540 has 48 divisors (see below), whose sum is σ = 23926086240. Its totient is φ = 2275568640.

The previous prime is 8539206521. The next prime is 8539206541. The reversal of 8539206540 is 456029358.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 8539206492 and 8539206501.

It is not an unprimeable number, because it can be changed into a prime (8539206541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41550 + ... + 137130.

It is an arithmetic number, because the mean of its divisors is an integer number (498460130).

Almost surely, 2^8539206540 is an apocalyptic number.

It is an amenable number.

8539206540 is an abundant number, since it is smaller than the sum of its proper divisors (15386879700).

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

8539206540 is a wasteful number, since it uses less digits than its factorization.

8539206540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97082 (or 97080 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 42.

The square root of 8539206540 is about 92407.8272658761. The cubic root of 8539206540 is about 2043.9605344560.

The spelling of 8539206540 in words is "eight billion, five hundred thirty-nine million, two hundred six thousand, five hundred forty".