21343114555 has 16 divisors (see below), whose sum is σ = 29278126080. Its totient is φ = 14631494112.

The previous prime is 21343114531. The next prime is 21343114567. The reversal of 21343114555 is 55541134312.

It is a cyclic number.

It is not a de Polignac number, because 21343114555 - 2¹³ = 21343106363 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21343114555.

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 15 ways as a sum of consecutive naturals, for example, 61986 + ... + 215704.

It is an arithmetic number, because the mean of its divisors is an integer number (1829882880).

Almost surely, 2^21343114555 is an apocalyptic number.

21343114555 is a deficient number, since it is larger than the sum of its proper divisors (7935011525).

21343114555 is a wasteful number, since it uses less digits than its factorization.

21343114555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157698.

The product of its digits is 36000, while the sum is 34.

Adding to 21343114555 its reverse (55541134312), we get a palindrome (76884248867).

The spelling of 21343114555 in words is "twenty-one billion, three hundred forty-three million, one hundred fourteen thousand, five hundred fifty-five".