21325066135 has 8 divisors (see below), whose sum is σ = 27095378256. Its totient is φ = 16056520320.

The previous prime is 21325066079. The next prime is 21325066159. The reversal of 21325066135 is 53166052312.

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

It is not a de Polignac number, because 21325066135 - 2¹¹ = 21325064087 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 21325066135.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125441481 + ... + 125441650.

It is an arithmetic number, because the mean of its divisors is an integer number (3386922282).

Almost surely, 2^21325066135 is an apocalyptic number.

21325066135 is a deficient number, since it is larger than the sum of its proper divisors (5770312121).

21325066135 is a wasteful number, since it uses less digits than its factorization.

21325066135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250883153.

The product of its (nonzero) digits is 32400, while the sum is 34.

The spelling of 21325066135 in words is "twenty-one billion, three hundred twenty-five million, sixty-six thousand, one hundred thirty-five".