20544055236405 has 96 divisors (see below), whose sum is σ = 36272647756800. Its totient is φ = 10755298575360.

The previous prime is 20544055236379. The next prime is 20544055236473. The reversal of 20544055236405 is 50463255044502.

20544055236405 is a `hidden beast` number, since 2 + 0 + 5 + 4 + 4 + 0 + 5 + 5 + 236 + 405 = 666.

It is not a de Polignac number, because 20544055236405 - 2⁷ = 20544055236277 is a prime.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 204794310 + ... + 204894600.

It is an arithmetic number, because the mean of its divisors is an integer number (377840080800).

Almost surely, 2^{20544055236405} is an apocalyptic number.

It is an amenable number.

20544055236405 is a deficient number, since it is larger than the sum of its proper divisors (15728592520395).

20544055236405 is a wasteful number, since it uses less digits than its factorization.

20544055236405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100811 (or 100808 counting only the distinct ones).

The product of its (nonzero) digits is 2880000, while the sum is 45.

The spelling of 20544055236405 in words is "twenty trillion, five hundred forty-four billion, fifty-five million, two hundred thirty-six thousand, four hundred five".