43604636561245 has 16 divisors (see below), whose sum is σ = 54013892405760. Its totient is φ = 33758173857600.

The previous prime is 43604636561243. The next prime is 43604636561281. The reversal of 43604636561245 is 54216563640634.

It is not a de Polignac number, because 43604636561245 - 2¹ = 43604636561243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43604636561243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21053611 + ... + 23031799.

It is an arithmetic number, because the mean of its divisors is an integer number (3375868275360).

Almost surely, 2^{43604636561245} is an apocalyptic number.

It is an amenable number.

43604636561245 is a deficient number, since it is larger than the sum of its proper divisors (10409255844515).

43604636561245 is a wasteful number, since it uses less digits than its factorization.

43604636561245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2120436.

The product of its (nonzero) digits is 37324800, while the sum is 55.

The spelling of 43604636561245 in words is "forty-three trillion, six hundred four billion, six hundred thirty-six million, five hundred sixty-one thousand, two hundred forty-five".