36645785280 has 336 divisors, whose sum is σ = 136578222144. Its totient is φ = 8964956160.

The previous prime is 36645785263. The next prime is 36645785287. The reversal of 36645785280 is 8258754663.

36645785280 is a `hidden beast` number, since 3 + 6 + 6 + 45 + 78 + 528 + 0 = 666.

It is not an unprimeable number, because it can be changed into a prime (36645785287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6249550 + ... + 6255410.

It is an arithmetic number, because the mean of its divisors is an integer number (406482804).

Almost surely, 2^36645785280 is an apocalyptic number.

36645785280 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 36645785280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68289111072).

36645785280 is an abundant number, since it is smaller than the sum of its proper divisors (99932436864).

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

36645785280 is a wasteful number, since it uses less digits than its factorization.

36645785280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6064 (or 6051 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 54.

The spelling of 36645785280 in words is "thirty-six billion, six hundred forty-five million, seven hundred eighty-five thousand, two hundred eighty".