20504051443105 has 16 divisors (see below), whose sum is σ = 24696139899024. Its totient is φ = 16342400805120.

The previous prime is 20504051443093. The next prime is 20504051443147. The reversal of 20504051443105 is 50134415040502.

It can be written as a sum of positive squares in 8 ways, for example, as 523446462016 + 19980604981089 = 723496^2 + 4469967^2 .

It is not a de Polignac number, because 20504051443105 - 2⁷ = 20504051442977 is a prime.

It is a super-2 number, since 2×20504051443105² (a number of 27 digits) contains 22 as substring.

It is a Duffinian 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, 13315359 + ... + 14775211.

It is an arithmetic number, because the mean of its divisors is an integer number (1543508743689).

Almost surely, 2^{20504051443105} is an apocalyptic number.

It is an amenable number.

20504051443105 is a deficient number, since it is larger than the sum of its proper divisors (4192088455919).

20504051443105 is a wasteful number, since it uses less digits than its factorization.

20504051443105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1470276.

The product of its (nonzero) digits is 48000, while the sum is 34.

Adding to 20504051443105 its reverse (50134415040502), we get a palindrome (70638466483607).

The spelling of 20504051443105 in words is "twenty trillion, five hundred four billion, fifty-one million, four hundred forty-three thousand, one hundred five".