20112042050555 has 64 divisors (see below), whose sum is σ = 29776394188800. Its totient is φ = 12699228487680.

The previous prime is 20112042050543. The next prime is 20112042050557. The reversal of 20112042050555 is 55505024021102.

It is a happy number.

It is not a de Polignac number, because 20112042050555 - 2¹⁰ = 20112042049531 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20112042050557) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 600719306 + ... + 600752784.

It is an arithmetic number, because the mean of its divisors is an integer number (465256159200).

Almost surely, 2^{20112042050555} is an apocalyptic number.

20112042050555 is a deficient number, since it is larger than the sum of its proper divisors (9664352138245).

20112042050555 is a wasteful number, since it uses less digits than its factorization.

20112042050555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36684.

The product of its (nonzero) digits is 20000, while the sum is 32.

Adding to 20112042050555 its reverse (55505024021102), we get a palindrome (75617066071657).

The spelling of 20112042050555 in words is "twenty trillion, one hundred twelve billion, forty-two million, fifty thousand, five hundred fifty-five".