43143443311021 has 8 divisors (see below), whose sum is σ = 43594747891520. Its totient is φ = 42692271931008.

The previous prime is 43143443311019. The next prime is 43143443311037. The reversal of 43143443311021 is 12011334434134.

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 43143443311021 - 2¹ = 43143443311019 is a prime.

It is a super-2 number, since 2×43143443311021² (a number of 28 digits) contains 22 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 (43143443311051) 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, 32648871 + ... + 33944596.

It is an arithmetic number, because the mean of its divisors is an integer number (5449343486440).

Almost surely, 2^{43143443311021} is an apocalyptic number.

It is an amenable number.

43143443311021 is a deficient number, since it is larger than the sum of its proper divisors (451304580499).

43143443311021 is an equidigital number, since it uses as much as digits as its factorization.

43143443311021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66600243.

The product of its (nonzero) digits is 41472, while the sum is 34.

Adding to 43143443311021 its reverse (12011334434134), we get a palindrome (55154777745155).

It can be divided in two parts, 43143443 and 311021, that added together give a square (43454464 = 6592²).

The spelling of 43143443311021 in words is "forty-three trillion, one hundred forty-three billion, four hundred forty-three million, three hundred eleven thousand, twenty-one".