21514445211342 has 16 divisors (see below), whose sum is σ = 43029091774800. Its totient is φ = 7171448178432.

The previous prime is 21514445211299. The next prime is 21514445211353. The reversal of 21514445211342 is 24311254441512.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 21514445211342.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6982467 + ... + 9580382.

It is an arithmetic number, because the mean of its divisors is an integer number (2689318235925).

Almost surely, 2^{21514445211342} is an apocalyptic number.

21514445211342 is an abundant number, since it is smaller than the sum of its proper divisors (21514646563458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21514445211342 is a wasteful number, since it uses less digits than its factorization.

21514445211342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16779347.

The product of its digits is 153600, while the sum is 39.

Adding to 21514445211342 its reverse (24311254441512), we get a palindrome (45825699652854).

The spelling of 21514445211342 in words is "twenty-one trillion, five hundred fourteen billion, four hundred forty-five million, two hundred eleven thousand, three hundred forty-two".