20105332354403 has 4 divisors (see below), whose sum is σ = 20121301642680. Its totient is φ = 20089363066128.

The previous prime is 20105332354391. The next prime is 20105332354421. The reversal of 20105332354403 is 30445323350102.

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 20105332354403 - 2¹⁸ = 20105332092259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20105332354453) 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, 7984642250 + ... + 7984644767.

It is an arithmetic number, because the mean of its divisors is an integer number (5030325410670).

Almost surely, 2^{20105332354403} is an apocalyptic number.

20105332354403 is a deficient number, since it is larger than the sum of its proper divisors (15969288277).

20105332354403 is a wasteful number, since it uses less digits than its factorization.

20105332354403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15969288276.

The product of its (nonzero) digits is 129600, while the sum is 35.

The spelling of 20105332354403 in words is "twenty trillion, one hundred five billion, three hundred thirty-two million, three hundred fifty-four thousand, four hundred three".