21344554135 has 8 divisors (see below), whose sum is σ = 25630698816. Its totient is φ = 17064154080.

The previous prime is 21344554129. The next prime is 21344554159. The reversal of 21344554135 is 53145544312.

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

It is not a de Polignac number, because 21344554135 - 2⁹ = 21344553623 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21344554094 and 21344554103.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1427976 + ... + 1442845.

It is an arithmetic number, because the mean of its divisors is an integer number (3203837352).

Almost surely, 2^21344554135 is an apocalyptic number.

21344554135 is a deficient number, since it is larger than the sum of its proper divisors (4286144681).

21344554135 is a wasteful number, since it uses less digits than its factorization.

21344554135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2872313.

The product of its digits is 144000, while the sum is 37.

The spelling of 21344554135 in words is "twenty-one billion, three hundred forty-four million, five hundred fifty-four thousand, one hundred thirty-five".