20103044505423 has 16 divisors (see below), whose sum is σ = 29240983629696. Its totient is φ = 12183583494240.

The previous prime is 20103044505391. The next prime is 20103044505443. The reversal of 20103044505423 is 32450544030102.

It is not a de Polignac number, because 20103044505423 - 2⁵ = 20103044505391 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20103044505443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3327861 + ... + 7161057.

It is an arithmetic number, because the mean of its divisors is an integer number (1827561476856).

Almost surely, 2^{20103044505423} is an apocalyptic number.

20103044505423 is a deficient number, since it is larger than the sum of its proper divisors (9137939124273).

20103044505423 is a wasteful number, since it uses less digits than its factorization.

20103044505423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3992134.

The product of its (nonzero) digits is 57600, while the sum is 33.

Adding to 20103044505423 its reverse (32450544030102), we get a palindrome (52553588535525).

The spelling of 20103044505423 in words is "twenty trillion, one hundred three billion, forty-four million, five hundred five thousand, four hundred twenty-three".