20441305555 has 16 divisors (see below), whose sum is σ = 26763393888. Its totient is φ = 14864256000.

The previous prime is 20441305523. The next prime is 20441305559. The reversal of 20441305555 is 55550314402.

It is not a de Polignac number, because 20441305555 - 2⁵ = 20441305523 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20441305555.

It is not an unprimeable number, because it can be changed into a prime (20441305559) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 426085 + ... + 471625.

It is an arithmetic number, because the mean of its divisors is an integer number (1672712118).

Almost surely, 2^20441305555 is an apocalyptic number.

20441305555 is a deficient number, since it is larger than the sum of its proper divisors (6322088333).

20441305555 is a wasteful number, since it uses less digits than its factorization.

20441305555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53718.

The product of its (nonzero) digits is 60000, while the sum is 34.

Adding to 20441305555 its reverse (55550314402), we get a palindrome (75991619957).

The spelling of 20441305555 in words is "twenty billion, four hundred forty-one million, three hundred five thousand, five hundred fifty-five".