20503035550043 has 8 divisors (see below), whose sum is σ = 20634902193360. Its totient is φ = 20371373195040.

The previous prime is 20503035550013. The next prime is 20503035550073. The reversal of 20503035550043 is 34005553030502.

It is an interprime number because it is at equal distance from previous prime (20503035550013) and next prime (20503035550073).

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 20503035550043 - 2¹² = 20503035545947 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20503035549985 and 20503035550012.

It is not an unprimeable number, because it can be changed into a prime (20503035550013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50870705 + ... + 51272162.

It is an arithmetic number, because the mean of its divisors is an integer number (2579362774170).

Almost surely, 2^{20503035550043} is an apocalyptic number.

20503035550043 is a deficient number, since it is larger than the sum of its proper divisors (131866643317).

20503035550043 is a wasteful number, since it uses less digits than its factorization.

20503035550043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102144157.

The product of its (nonzero) digits is 135000, while the sum is 35.

Adding to 20503035550043 its reverse (34005553030502), we get a palindrome (54508588580545).

The spelling of 20503035550043 in words is "twenty trillion, five hundred three billion, thirty-five million, five hundred fifty thousand, forty-three".