135603270021 has 8 divisors (see below), whose sum is σ = 180834156160. Its totient is φ = 90387281952.

The previous prime is 135603269987. The next prime is 135603270053. The reversal of 135603270021 is 120072306531.

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

It is not a de Polignac number, because 135603270021 - 2²⁹ = 135066399109 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135603270221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3703261 + ... + 3739698.

It is an arithmetic number, because the mean of its divisors is an integer number (22604269520).

Almost surely, 2^135603270021 is an apocalyptic number.

It is an amenable number.

135603270021 is a deficient number, since it is larger than the sum of its proper divisors (45230886139).

135603270021 is an equidigital number, since it uses as much as digits as its factorization.

135603270021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7449035.

The product of its (nonzero) digits is 7560, while the sum is 30.

Adding to 135603270021 its reverse (120072306531), we get a palindrome (255675576552).

The spelling of 135603270021 in words is "one hundred thirty-five billion, six hundred three million, two hundred seventy thousand, twenty-one".