20403021133 has 8 divisors (see below), whose sum is σ = 22262600736. Its totient is φ = 18544234800.

The previous prime is 20403021131. The next prime is 20403021173. The reversal of 20403021133 is 33112030402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20403021133 - 2¹ = 20403021131 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 20403021133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20403021131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143883 + ... + 248008.

It is an arithmetic number, because the mean of its divisors is an integer number (2782825092).

Almost surely, 2^20403021133 is an apocalyptic number.

It is an amenable number.

20403021133 is a deficient number, since it is larger than the sum of its proper divisors (1859579603).

20403021133 is a wasteful number, since it uses less digits than its factorization.

20403021133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396635.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 20403021133 its reverse (33112030402), we get a palindrome (53515051535).

The spelling of 20403021133 in words is "twenty billion, four hundred three million, twenty-one thousand, one hundred thirty-three".