21532400044103 has 8 divisors (see below), whose sum is σ = 23305264836000. Its totient is φ = 19776181870368.

The previous prime is 21532400044091. The next prime is 21532400044123. The reversal of 21532400044103 is 30144000423512.

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 21532400044103 - 2⁴ = 21532400044087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21532400044123) 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, 4161651848 + ... + 4161657021.

It is an arithmetic number, because the mean of its divisors is an integer number (2913158104500).

Almost surely, 2^{21532400044103} is an apocalyptic number.

21532400044103 is a deficient number, since it is larger than the sum of its proper divisors (1772864791897).

21532400044103 is a wasteful number, since it uses less digits than its factorization.

21532400044103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8323309081.

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 21532400044103 its reverse (30144000423512), we get a palindrome (51676400467615).

The spelling of 21532400044103 in words is "twenty-one trillion, five hundred thirty-two billion, four hundred million, forty-four thousand, one hundred three".