20043241555 has 8 divisors (see below), whose sum is σ = 25097624352. Its totient is φ = 15337436928.

The previous prime is 20043241501. The next prime is 20043241583. The reversal of 20043241555 is 55514234002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20043241555 - 2¹⁹ = 20042717267 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87144414 + ... + 87144643.

It is an arithmetic number, because the mean of its divisors is an integer number (3137203044).

Almost surely, 2^20043241555 is an apocalyptic number.

20043241555 is a deficient number, since it is larger than the sum of its proper divisors (5054382797).

20043241555 is a wasteful number, since it uses less digits than its factorization.

20043241555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174289085.

The product of its (nonzero) digits is 24000, while the sum is 31.

Adding to 20043241555 its reverse (55514234002), we get a palindrome (75557475557).

The spelling of 20043241555 in words is "twenty billion, forty-three million, two hundred forty-one thousand, five hundred fifty-five".