8539523989920 has 1152 divisors, whose sum is σ = 37658530990080. Its totient is φ = 1709890560000.

The previous prime is 8539523989853. The next prime is 8539523989987. The reversal of 8539523989920 is 299893259358.

8539523989920 is a `hidden beast` number, since 8 + 5 + 3 + 9 + 523 + 9 + 8 + 9 + 92 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (8539523989853) and next prime (8539523989987).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1836059595 + ... + 1836064245.

It is an arithmetic number, because the mean of its divisors is an integer number (32689697040).

Almost surely, 2^{8539523989920} is an apocalyptic number.

8539523989920 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8539523989920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18829265495040).

8539523989920 is an abundant number, since it is smaller than the sum of its proper divisors (29119007000160).

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

8539523989920 is a wasteful number, since it uses less digits than its factorization.

8539523989920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5290 (or 5279 counting only the distinct ones).

The product of its (nonzero) digits is 377913600, while the sum is 72.

The spelling of 8539523989920 in words is "eight trillion, five hundred thirty-nine billion, five hundred twenty-three million, nine hundred eighty-nine thousand, nine hundred twenty".