20401142105003 has 4 divisors (see below), whose sum is σ = 22255791387288. Its totient is φ = 18546492822720.

The previous prime is 20401142104979. The next prime is 20401142105039. The reversal of 20401142105003 is 30050124110402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20401142105003 - 2⁸ = 20401142104747 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 20401142105003.

It is not an unprimeable number, because it can be changed into a prime (20401142105083) 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, 927324641126 + ... + 927324641147.

It is an arithmetic number, because the mean of its divisors is an integer number (5563947846822).

Almost surely, 2^{20401142105003} is an apocalyptic number.

20401142105003 is a deficient number, since it is larger than the sum of its proper divisors (1854649282285).

20401142105003 is a wasteful number, since it uses less digits than its factorization.

20401142105003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1854649282284.

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 20401142105003 its reverse (30050124110402), we get a palindrome (50451266215405).

The spelling of 20401142105003 in words is "twenty trillion, four hundred one billion, one hundred forty-two million, one hundred five thousand, three".