43354421544421 has 8 divisors (see below), whose sum is σ = 46790655529464. Its totient is φ = 39932655913920.

The previous prime is 43354421544341. The next prime is 43354421544443. The reversal of 43354421544421 is 12444512445334.

It can be written as a sum of positive squares in 4 ways, for example, as 2784846713796 + 40569574830625 = 1668786^2 + 6369425^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 43354421544421 - 2²⁹ = 43353884673509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43354421544461) 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, 3617082406 + ... + 3617094391.

It is an arithmetic number, because the mean of its divisors is an integer number (5848831941183).

Almost surely, 2^{43354421544421} is an apocalyptic number.

It is an amenable number.

43354421544421 is a deficient number, since it is larger than the sum of its proper divisors (3436233985043).

43354421544421 is a wasteful number, since it uses less digits than its factorization.

43354421544421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7234177271.

The product of its digits is 3686400, while the sum is 46.

Adding to 43354421544421 its reverse (12444512445334), we get a palindrome (55798933989755).

The spelling of 43354421544421 in words is "forty-three trillion, three hundred fifty-four billion, four hundred twenty-one million, five hundred forty-four thousand, four hundred twenty-one".