20503441440101 has 4 divisors (see below), whose sum is σ = 20762978673600. Its totient is φ = 20243904206604.

The previous prime is 20503441440067. The next prime is 20503441440107. The reversal of 20503441440101 is 10104414430502.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20503441440101 - 2³⁰ = 20502367698277 is a prime.

It is a super-2 number, since 2×20503441440101² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20503441440107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129768616631 + ... + 129768616788.

It is an arithmetic number, because the mean of its divisors is an integer number (5190744668400).

Almost surely, 2^{20503441440101} is an apocalyptic number.

It is an amenable number.

20503441440101 is a deficient number, since it is larger than the sum of its proper divisors (259537233499).

20503441440101 is an equidigital number, since it uses as much as digits as its factorization.

20503441440101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259537233498.

The product of its (nonzero) digits is 7680, while the sum is 29.

Adding to 20503441440101 its reverse (10104414430502), we get a palindrome (30607855870603).

The spelling of 20503441440101 in words is "twenty trillion, five hundred three billion, four hundred forty-one million, four hundred forty thousand, one hundred one".