21455341335 has 48 divisors (see below), whose sum is σ = 38409396480. Its totient is φ = 11067816960.

The previous prime is 21455341331. The next prime is 21455341337. The reversal of 21455341335 is 53314355412.

It is not a de Polignac number, because 21455341335 - 2² = 21455341331 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21455341335.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21455341331) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4038661 + ... + 4043969.

It is an arithmetic number, because the mean of its divisors is an integer number (800195760).

Almost surely, 2^21455341335 is an apocalyptic number.

21455341335 is a deficient number, since it is larger than the sum of its proper divisors (16954055145).

21455341335 is a wasteful number, since it uses less digits than its factorization.

21455341335 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8248 (or 8245 counting only the distinct ones).

The product of its digits is 108000, while the sum is 36.

Adding to 21455341335 its reverse (53314355412), we get a palindrome (74769696747).

The spelling of 21455341335 in words is "twenty-one billion, four hundred fifty-five million, three hundred forty-one thousand, three hundred thirty-five".