20401333403 has 4 divisors (see below), whose sum is σ = 22256000088. Its totient is φ = 18546666720.

The previous prime is 20401333373. The next prime is 20401333417. The reversal of 20401333403 is 30433310402.

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 20401333403 - 2²⁶ = 20334224539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20401533403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 927333326 + ... + 927333347.

It is an arithmetic number, because the mean of its divisors is an integer number (5564000022).

Almost surely, 2^20401333403 is an apocalyptic number.

20401333403 is a deficient number, since it is larger than the sum of its proper divisors (1854666685).

20401333403 is a wasteful number, since it uses less digits than its factorization.

20401333403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1854666684.

The product of its (nonzero) digits is 2592, while the sum is 23.

Adding to 20401333403 its reverse (30433310402), we get a palindrome (50834643805).

The spelling of 20401333403 in words is "twenty billion, four hundred one million, three hundred thirty-three thousand, four hundred three".