21434343403413 has 8 divisors (see below), whose sum is σ = 28581990227488. Its totient is φ = 14288129424144.

The previous prime is 21434343403391. The next prime is 21434343403433. The reversal of 21434343403413 is 31430434343412.

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

It is not a de Polignac number, because 21434343403413 - 2⁶ = 21434343403349 is a prime.

It is a super-3 number, since 3×21434343403413³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21434343403433) 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, 358176295 + ... + 358236132.

It is an arithmetic number, because the mean of its divisors is an integer number (3572748778436).

Almost surely, 2^{21434343403413} is an apocalyptic number.

It is an amenable number.

21434343403413 is a deficient number, since it is larger than the sum of its proper divisors (7147646824075).

21434343403413 is an equidigital number, since it uses as much as digits as its factorization.

21434343403413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716422403.

The product of its (nonzero) digits is 497664, while the sum is 39.

Adding to 21434343403413 its reverse (31430434343412), we get a palindrome (52864777746825).

The spelling of 21434343403413 in words is "twenty-one trillion, four hundred thirty-four billion, three hundred forty-three million, four hundred three thousand, four hundred thirteen".