36561140136 has 96 divisors (see below), whose sum is σ = 100027699200. Its totient is φ = 12063219840.

The previous prime is 36561139999. The next prime is 36561140141. The reversal of 36561140136 is 63104116563.

36561140136 is a `hidden beast` number, since 3 + 6 + 5 + 611 + 4 + 0 + 1 + 36 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 36561140136.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11542825 + ... + 11545991.

It is an arithmetic number, because the mean of its divisors is an integer number (1041955200).

Almost surely, 2^36561140136 is an apocalyptic number.

36561140136 is a gapful number since it is divisible by the number (36) 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 36561140136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50013849600).

36561140136 is an abundant number, since it is smaller than the sum of its proper divisors (63466559064).

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

36561140136 is a wasteful number, since it uses less digits than its factorization.

36561140136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4759 (or 4752 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

Adding to 36561140136 its reverse (63104116563), we get a palindrome (99665256699).

The spelling of 36561140136 in words is "thirty-six billion, five hundred sixty-one million, one hundred forty thousand, one hundred thirty-six".