20055021124405 has 128 divisors (see below), whose sum is σ = 26836282368000. Its totient is φ = 14325556285440.

The previous prime is 20055021124379. The next prime is 20055021124441. The reversal of 20055021124405 is 50442112055002.

It is not a de Polignac number, because 20055021124405 - 2¹⁹ = 20055020600117 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 10093114822 + ... + 10093116808.

It is an arithmetic number, because the mean of its divisors is an integer number (209658456000).

Almost surely, 2^{20055021124405} is an apocalyptic number.

It is an amenable number.

20055021124405 is a deficient number, since it is larger than the sum of its proper divisors (6781261243595).

20055021124405 is a wasteful number, since it uses less digits than its factorization.

20055021124405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2699.

The product of its (nonzero) digits is 16000, while the sum is 31.

Adding to 20055021124405 its reverse (50442112055002), we get a palindrome (70497133179407).

The spelling of 20055021124405 in words is "twenty trillion, fifty-five billion, twenty-one million, one hundred twenty-four thousand, four hundred five".