21652431042603 has 32 divisors (see below), whose sum is σ = 29012804457984. Its totient is φ = 14363662401792.

The previous prime is 21652431042577. The next prime is 21652431042611. The reversal of 21652431042603 is 30624013425612.

It is not a de Polignac number, because 21652431042603 - 2³³ = 21643841108011 is a prime.

It is a super-3 number, since 3×21652431042603³ (a number of 41 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (21652431042653) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4000076925 + ... + 4000082337.

It is an arithmetic number, because the mean of its divisors is an integer number (906650139312).

Almost surely, 2^{21652431042603} is an apocalyptic number.

21652431042603 is a deficient number, since it is larger than the sum of its proper divisors (7360373415381).

21652431042603 is a wasteful number, since it uses less digits than its factorization.

21652431042603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11475.

The product of its (nonzero) digits is 207360, while the sum is 39.

The spelling of 21652431042603 in words is "twenty-one trillion, six hundred fifty-two billion, four hundred thirty-one million, forty-two thousand, six hundred three".