36505443645 has 24 divisors (see below), whose sum is σ = 69028476192. Its totient is φ = 17699608800.

The previous prime is 36505443631. The next prime is 36505443673. The reversal of 36505443645 is 54634450563.

36505443645 is a `hidden beast` number, since 3 + 65 + 0 + 544 + 3 + 6 + 45 = 666.

It is not a de Polignac number, because 36505443645 - 2⁶ = 36505443581 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 36505443645.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36873691 + ... + 36874680.

It is an arithmetic number, because the mean of its divisors is an integer number (2876186508).

Almost surely, 2^36505443645 is an apocalyptic number.

It is an amenable number.

36505443645 is a deficient number, since it is larger than the sum of its proper divisors (32523032547).

36505443645 is a wasteful number, since it uses less digits than its factorization.

36505443645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73748393 (or 73748390 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 45.

The spelling of 36505443645 in words is "thirty-six billion, five hundred five million, four hundred forty-three thousand, six hundred forty-five".