21153043341 has 12 divisors (see below), whose sum is σ = 30972950268. Its totient is φ = 13908849984.

The previous prime is 21153043337. The next prime is 21153043343. The reversal of 21153043341 is 14334035112.

It is a happy number.

21153043341 is a `hidden beast` number, since 2 + 1 + 15 + 304 + 3 + 341 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 14238455625 + 6914587716 = 119325^2 + 83154^2 .

It is not a de Polignac number, because 21153043341 - 2² = 21153043337 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21153043343) 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 11 ways as a sum of consecutive naturals, for example, 16097550 + ... + 16098863.

It is an arithmetic number, because the mean of its divisors is an integer number (2581079189).

Almost surely, 2^21153043341 is an apocalyptic number.

It is an amenable number.

21153043341 is a deficient number, since it is larger than the sum of its proper divisors (9819906927).

21153043341 is a wasteful number, since it uses less digits than its factorization.

21153043341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32196492 (or 32196489 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

Adding to 21153043341 its reverse (14334035112), we get a palindrome (35487078453).

The spelling of 21153043341 in words is "twenty-one billion, one hundred fifty-three million, forty-three thousand, three hundred forty-one".