20504051443055 has 16 divisors (see below), whose sum is σ = 25698160686240. Its totient is φ = 15689403349632.

The previous prime is 20504051443033. The next prime is 20504051443093. The reversal of 20504051443055 is 55034415040502.

It is a cyclic number.

It is not a de Polignac number, because 20504051443055 - 2⁶ = 20504051442991 is a prime.

It is a super-2 number, since 2×20504051443055² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 939249344 + ... + 939271173.

It is an arithmetic number, because the mean of its divisors is an integer number (1606135042890).

Almost surely, 2^{20504051443055} is an apocalyptic number.

20504051443055 is a deficient number, since it is larger than the sum of its proper divisors (5194109243185).

20504051443055 is a wasteful number, since it uses less digits than its factorization.

20504051443055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1878520618.

The product of its (nonzero) digits is 240000, while the sum is 38.

Adding to 20504051443055 its reverse (55034415040502), we get a palindrome (75538466483557).

The spelling of 20504051443055 in words is "twenty trillion, five hundred four billion, fifty-one million, four hundred forty-three thousand, fifty-five".