20103423412501 has 16 divisors (see below), whose sum is σ = 23618222808768. Its totient is φ = 16869852172800.

The previous prime is 20103423412459. The next prime is 20103423412519. The reversal of 20103423412501 is 10521432430102.

It is a de Polignac number, because none of the positive numbers 2^k-20103423412501 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20103423412501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20103423413501) 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, 16787250 + ... + 17944876.

It is an arithmetic number, because the mean of its divisors is an integer number (1476138925548).

Almost surely, 2^{20103423412501} is an apocalyptic number.

It is an amenable number.

20103423412501 is a deficient number, since it is larger than the sum of its proper divisors (3514799396267).

20103423412501 is a wasteful number, since it uses less digits than its factorization.

20103423412501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1279092.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 20103423412501 its reverse (10521432430102), we get a palindrome (30624855842603).

The spelling of 20103423412501 in words is "twenty trillion, one hundred three billion, four hundred twenty-three million, four hundred twelve thousand, five hundred one".