36539984520 has 320 divisors, whose sum is σ = 139226472000. Its totient is φ = 8520878592.

The previous prime is 36539984477. The next prime is 36539984597. The reversal of 36539984520 is 2548993563.

36539984520 is a `hidden beast` number, since 3 + 6 + 5 + 39 + 9 + 84 + 520 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 777451 + ... + 823109.

It is an arithmetic number, because the mean of its divisors is an integer number (435082725).

Almost surely, 2^36539984520 is an apocalyptic number.

36539984520 is a gapful number since it is divisible by the number (30) 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 36539984520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69613236000).

36539984520 is an abundant number, since it is smaller than the sum of its proper divisors (102686487480).

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

36539984520 is a wasteful number, since it uses less digits than its factorization.

36539984520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45714 (or 45701 counting only the distinct ones).

The product of its (nonzero) digits is 6998400, while the sum is 54.

The spelling of 36539984520 in words is "thirty-six billion, five hundred thirty-nine million, nine hundred eighty-four thousand, five hundred twenty".