21345313115411 has 8 divisors (see below), whose sum is σ = 21367332731424. Its totient is φ = 21323294121600.

The previous prime is 21345313115377. The next prime is 21345313115461. The reversal of 21345313115411 is 11451131354312.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21345313115411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21345313115461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104883725 + ... + 105087041.

It is an arithmetic number, because the mean of its divisors is an integer number (2670916591428).

Almost surely, 2^{21345313115411} is an apocalyptic number.

21345313115411 is a deficient number, since it is larger than the sum of its proper divisors (22019616013).

21345313115411 is a wasteful number, since it uses less digits than its factorization.

21345313115411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311101.

The product of its digits is 21600, while the sum is 35.

Adding to 21345313115411 its reverse (11451131354312), we get a palindrome (32796444469723).

The spelling of 21345313115411 in words is "twenty-one trillion, three hundred forty-five billion, three hundred thirteen million, one hundred fifteen thousand, four hundred eleven".