20836964104545 has 32 divisors (see below), whose sum is σ = 34573093084800. Its totient is φ = 10703604570624.

The previous prime is 20836964104513. The next prime is 20836964104559. The reversal of 20836964104545 is 54540146963802.

It is a happy number.

It is not a de Polignac number, because 20836964104545 - 2⁵ = 20836964104513 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58380847 + ... + 58736676.

It is an arithmetic number, because the mean of its divisors is an integer number (1080409158900).

Almost surely, 2^{20836964104545} is an apocalyptic number.

It is an amenable number.

20836964104545 is a deficient number, since it is larger than the sum of its proper divisors (13736128980255).

20836964104545 is a wasteful number, since it uses less digits than its factorization.

20836964104545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117117969.

The product of its (nonzero) digits is 24883200, while the sum is 57.

The spelling of 20836964104545 in words is "twenty trillion, eight hundred thirty-six billion, nine hundred sixty-four million, one hundred four thousand, five hundred forty-five".