21413203534344 has 32 divisors (see below), whose sum is σ = 53549785275840. Its totient is φ = 7135497652800.

The previous prime is 21413203534321. The next prime is 21413203534357. The reversal of 21413203534344 is 44343530231412.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139725487 + ... + 139878654.

It is an arithmetic number, because the mean of its divisors is an integer number (1673430789870).

Almost surely, 2^{21413203534344} is an apocalyptic number.

21413203534344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21413203534344 is an abundant number, since it is smaller than the sum of its proper divisors (32136581741496).

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

21413203534344 is a wasteful number, since it uses less digits than its factorization.

21413203534344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279607341 (or 279607337 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 39.

Adding to 21413203534344 its reverse (44343530231412), we get a palindrome (65756733765756).

The spelling of 21413203534344 in words is "twenty-one trillion, four hundred thirteen billion, two hundred three million, five hundred thirty-four thousand, three hundred forty-four".